• CON

    The ice age was only a blink in time ago, and man didn't...

    The big lie of climate change

    The myth of climate change is nothing but a lie dreamed up by the elite politicians in order to strike fear into poorer, more gullible nations in order to reduce the capabilities and wealth of the western world and to transfer that wealth to their minions in the poorer countries. The climate has always changed on this planet, many times quite rapidly, and with no influence by humans. The ice age was only a blink in time ago, and man didn't cause it and man didn't fix it, just as now, although the globalist elites would have us believe otherwise. The fact is that hydrocarbon fuels are a finite resource and we do need to find better options, but CO2 is not a harmful gas, it is actually just plant food, which is good. If you watched An Inconvenient Truth, starring Al "King of UN Capitalists" Gore, and believed the lies about AGW then you are just a minion of the UN Agenda 21 machine, or you are looking to capitalize on the fear created by such a blatant propagandist production.

    • https://www.debate.org/debates/The-big-lie-of-climate-change/1/
  • PRO

    Common definitions are assumed, unless otherwise stated...

    Anthropogenic climate change.

    I will contend that anthropegenic climate change exists. The contender will contend that anthropegenic climate change is non-existent. Structure R1 Acceptance & definitions R2 Arguments R3 Rebuttals R4 Defense Burden of proof Burden of proof will be shared equally. This is because I am making the affrimative claim and the instiagator, yet am arguing for what is normally accepted in the scientific community. Therefore, the burdens of proof cancel each other out resulting in neutral 50/50 burden of proof. Further explanation of r1 setup. First round is just for acceptance and definitions if need be. Common definitions are assumed, unless otherwise stated and agreed upon. Round two each person will make their argument, but no direct responses to the other person's argument. Focus on making a convincing argument that if not for your opponent's rebuttal would sell your audience. This is the only round to make new arguments for your case. Round three each person will respond directly to their opponent's round two argument pointing out any logical fallacies and attempt to find flaws. Round four each person defends their round two argument against their opponent's round three argument. For example if I say that is a cherry picking fallacy as a rebuttal in round three against my opponent round two argument, my opponent would explain in round four as a defense why me calling their argument a cherry picking fallacy is incorrect. Thank you in advance for accepting the debate. Previous debate for reference. [0] Try to stick to the structure please, makes it much easier for voters to follow the debate. Source. 0. http://www.debate.org...

    • https://www.debate.org/debates/Anthropogenic-climate-change./6/
  • PRO

    They collectively represent a significant pool of climate...

    Recycling paper is a good way to fight climate change.

    I. Rebuttal At this point, demand (part of point 1.) is essentially pointless, it does nothing for either of our arguments. What I was saying is that not everyone cares whether their paper is recycled or not. So they aren't always competing. Apparently you concede my argument that demand for new paper exceeds that of recycled, and adding to that, even recycled paper must be mixed in with some new paper/pulp. A. http://en.wikipedia.org... In the "importance" section, there is a sourced claim that says: "Old growth forests also store large amounts of carbon gas above and below the ground. They collectively represent a significant pool of climate gases such as greenhouse gases. Continued liquidation of these forests may increase the risk of global climate change." Or in other words, when you cut a tree down, gases are released. Commercial forests become a zero sum for the climate, even if they do use up carbon dioxide, it will eventually be put back in the air. In essence, it means that trees that are planted, simply to be cut down, are worthless when it comes to preventing climate change. B. Indeed, I concede that trees use most of their carbon dioxide during growth. However, trees do continually use carbon dioxide, and since old trees are (or should) not be cut down, they will not eventually become a zero sum for climate change. C. Without a good root system, less photosynthesis will occur in the leaves (as there is less water), and there will be less regulation of carbon dioxide. 2. Biodiversity is important in preventing the climate change. Here in the benefits section, "other ecological services" http://en.wikipedia.org... It is stated that biodiversity plays a role in regulating the chemistry of the atmosphere and the water supply (which allows other plants to grow, more regulation, etc.), and it states that studies have shown that humans cannot artificially build ecosystems to replace it. Going on, you say that private ownership would not have erosion. Perhaps in the distant future, but not until the the root system has been well established (which can vary, but we'll be waiting at least half a century). As well, in many places where deforestation is occurring, there isn't a lot of private land ownership, so if these governments were to create the industry, they wouldn't be privately owned. D. I'll be honest with you, that's a pretty naive view of the worldwide ecosystem. Plants need animals, animals need plants. If all the animals died, what would pollinate the plants, what would spread the seeds, what would provide the natural fertilizer? Animals and plants are inter-related, if you take out one, you take out both. And all of the world's ecosystems are related in the same why, you take out one, it's going to hurt in other places too. A. http://news.bbc.co.uk...... That website says that the US, UK, and AUS are leading in per capita pollution. My point is that the developing world, as a whole, creates more pollution than the developed world. Your article does not tackle the total quantity issue, just per capita, and you're not considering the fact that there are more people living in developing countries than in developed ones. Per capita pollution is important, but in this case the toal is more important. You continue on about the wonders of tree farming, which I have already proven is zero sum for preventing climate change, it hurts none, yet it helps none. B. Countries are not going to magically get good crops from the developed world, developing countries have their own agricultural industries. And if they will do as you say, they will maximize their profit, and giving their engineered crops to developing nations is only going to decrease their profit. C. Sure, you'll plant trees over the dead ones, ignoring the other environmental costs which do indirectly contribute to climate change. And then you cut them down again, preventing those trees from being of any use in preventing climate change. Oh, and let's totally forget that these countries do not have commercial planting industries. D. I think it's quite obvious, if we recycle, we won't need to cut down as many trees. Even you support that, in your very first round. E. http://en.wikipedia.org... In the "Locations of remaining intact forests" cited section, the massive amounts of these "virgin forests" cut down is revealed. It is highly related to the demand for paper products. By not recycling paper, these countries are submitting to a commercial forest plantation system, which does nothing to prevent climate change. F. There are private companies that handle recycling, you haven't provided any source that says all recycling is done by the government. G. Recycling saves 40% of the cost of making new paper, so it's an industry. It may be taking away from parts of the industry, but that's not a big deal, as I'll solidify later. Because recycling saves costs, and is efficient, it will be prefered in places that are poor and need efficiency (the developing world). II. My Final Case 1. http://en.wikipedia.org... In the "importance" section, it is stated that old forests have a massive storage of green house gases. Cutting these trees down will further climate change. A. If old forests have these gases, then new trees would have a lesser amount. When they are cut down, the release of these gases nullifies any good they did to prevent climate change. The negative's argument that commercial forests are useful in preventing climate change is completely null. B. The only forests which can prevent climate change are those that stay rooted in the ground, permanently uncut. Commercial forests will always be cut down, and so will always be zero sum in preventing climate change. C. http://en.wikipedia.org... In the "Locations of remaining intact forests" section, the locations and percentages of old forests left is shown. As it states, the amount of land which these trees are constantly being cut down, in gigantic numbers. This is in part causing climate change. D. Recycling increases efficiency, the negative has made no attempt to challenge this specifically. Because recycling increases efficiency, we will be able to keep more trees rooted in the ground, and that is good for the environment. E. Around 70% of these remaining old forests are in developing countries, and could be protected with recycling. F. Protecting these trees not only directly benefits us by regulating green house gases, but their biodiversity and preventing of erosion indirectly helps prevent catastrophic change. 2. The negative's argument that commercial forests help prevent climate change is wrong, while the affirmative is right. A. From the earlier article, it is said that cutting down trees releases greenhouse gases. This will further climate change. This totally nullifies the negative point that commercial forests prevent climate change. They will constantly be cut down, constantly grown, and never contribute to slowing climate change. B. Since all the negative proposes for slowing climate change is the planting of commercial forests, it is clear that the negative does nothing to prevent climate change. C. I have not been proven wrong by the negative in that recycling increases efficiency. More efficiency means more trees left standing uncut, and less climate change. Voting To all the voters, I have proven that commercial forests is zero sum in preventing climate change. In order for trees to prevent climate change, they must stay there uncut. That's as simple as it gets. Recycling gives us more material, and allows us to keep more trees in place. Finally Great debate negative! I'm happy this didn't go to ad hitlerum, as internet debates so often do.

    • https://www.debate.org/debates/Recycling-paper-is-a-good-way-to-fight-climate-change./1/
  • PRO

    Common definitions are assumed, unless otherwise stated...

    Anthropogenic global climate change.

    I will contend that anthropegenic climate change exists. The contender will contend that anthropegenic climate change is non-existent. Structure R1 Acceptance & definitions R2 Arguments R3 Rebuttals R4 Defense Burden of proof Burden of proof will be shared equally. This is because I am making the affrimative claim and the instiagator, yet am arguing for what is normally accepted in the scientific community. Therefore, the burdens of proof cancel each other out resulting in neutral 50/50 burden of proof. Further explanation of r1 setup. First round is just for acceptance and definitions if need be. Common definitions are assumed, unless otherwise stated and agreed upon. Anthropogenic " Caused by humans" [1] Round two each person will make their argument, but no direct responses to the other person's argument. Focus on making a convincing argument that if not for your opponent's rebuttal would sell your audience. This is the only round to make new arguments for your case. Round three each person will respond directly to their opponent's round two argument pointing out any logical fallacies and attempt to find flaws. Round four each person defends their round two argument against their opponent's round three argument. For example if I say that is a cherry picking fallacy as a rebuttal in round three against my opponent round two argument, my opponent would explain in round four as a defense why me calling their argument a cherry picking fallacy is incorrect. Thank you in advance for accepting the debate. Previous debate for reference. [0] Try to stick to the structure please, makes it much easier for voters to follow the debate. Source. 0. http://www.debate.org... 1. http://www.thefreedictionary.com...

    • https://www.debate.org/debates/Anthropogenic-global-climate-change./1/
  • CON

    Here is a graph showing relative humidity over the last...

    That Humans Are Causing Climate Change

    My opponent has not made a single argument for his position or a refutation of my arguments. His entire argument in round 3 is a source war (when the debate revolves around the number of sources each debater can put forth). Not only does it not satisfy his burden of proof, it is no way to argue. In this argument, I will first consider his introductory points, then proceed to refute the relevant arguments he made from his first argument, and finally show how his source war does not prove his point, especially on scientific topics. My opponent has not shown how his arguments are relevant, as he hasn't addressed my arguments as to how they aren't relevant. Also, from the resolution and the arguments you have put forth, you have been arguing that humans have been a significant, if not the main cause of the modern global warming. I've been showing how they're not. Refutations Climate Models Climate models are far from perfect. In fact, they have consistently overestimated warming. "The computer models predict that the 20th century temperatures should have increased by 1.6 to 3.74 Celsius, while the actual observed 20th-century temperature increase was about 0.6 Celsius. A model that fails to history match is useless for predicting the future."[1] Here is a graph showing various climate model predictions to actual temperatures: "The IPCC models projected the global 17-year SST trend ending August 2011 at 0.15 C/decade, but the observed rise was only 0.02 C/decade... The quoted error on a single measurement is 0.05 C. The probability that the IPCC projections overstate the warming in greater than 90%." I could go on more about this, but since my opponent has provided no proof of the validity of climate models, this will suffice.[1] To conclude, here is a prediction made by a climate model: Built in cooling trend until at least 2024 Temperature Hadsst3 moving average anomaly 2035 - 0.15 Temperature Hadsst3 moving average anomaly 2100 " 0.5 General Conclusion " by 2100 all the 20th century temperature rise will have been reversed.[2] Why should we believe the models that predict excessive warming instead of models that predict a decrease in temperatures. Water Vapor Feedback Once again, the predictions to not match up with the observations. The feedback predicts relative humidity to remain constant so that the atmosphere can hold more water vapor with increased temperatures. However, humidity has actually fallen. This doesn't only negate the supposed positive feedback, but if the decrease is large enough, it may actually become a negative feedback. Here is a graph showing relative humidity over the last 60 years: "This shows that the actual water vapor content in the upper troposphere has declined by 13.7% (best fit line) from 1948 to 2012 at the 400 mb pressure level. The climate models predict that humidity will increase in the upper troposphere, but the data shows a large decrease; just where water vapor changes have the greatest effect on global temperatures."[1] Ocean Acidification Actually, claims of ocean acidification have been greatly exaggerated and misinterpreted. The mean drop in pH levels as a result of CO2 increases is around 0.3, but the sea can experience changes of almost 1.4 in as little as just a day. "On a monthly scale the pH varies by 0.024 to 1.430 pH units.""At Puerto Morelos (in Mexico"s easternmost state, on the Yucat"n Peninsula) the pH varied as much as 0.3 units per hour due to groundwater springs.""Even the more stable and vast open ocean is not a fixed pH all year round. Hofmann writes that 'Open-water areas (in the Southern Ocean) experience a strong seasonal shift in seawater pH (~0.3"0.5 units) between austral summer and winter.'"[3][4] This is the paper's hypothesis: "This natural variability has prompted the suggestion that an appropriate null hypothesis may be, until evidence is obtained to the contrary, that major biogeochemical processes in the oceans other than calcification will not be fundamentally different under future higher CO2/lower pH conditions"[3][4] The Consensus This argument has employed by pro in both his first argument as an argument, and in this round to support his position. However, both instances commit both a fallacy and a gross inaccuracy. First, the fallacy. Science does not work by consensus. The number of researchers or organizations has little bearing on whether what they believe is actually true. Michael Crichton has said, "Consensus is the business of politics. Science, on the contrary, requires only one investigator who happens to be right, which means that he or she has results that are verifiable by reference to the real world. In science consensus is irrelevant. What is relevant is reproducible results. The greatest scientists in history are great precisely because they broke with the consensus." My opponent has said that petroleum companies supporting climate change deniers is a conflict of interest, but so are governmental organizations, because legislators want them to provide information that will support the legislation will support. Politics in science hardly makes for objective conclusions.[1] Even so, the consensus doesn't even exist in the first place. Over 31,000 scientists (with at least a Bachelors' degree in relevant fields) have signed a petition saying that global warming is not anthropogenic. The Heartland Institute has conducted an international survey of 530 climate scientists in 2003. The survey asked if the current state of scientific knowledge is developed well enough to allow for a reasonable assessment of the effects of greenhouse gases. Two-thirds of the scientists surveyed (65.9 percent) disagreed with the statement, with nearly half (45.7 percent) scoring it with a 1 or 2, indicating strong disagreement. Only 10.9 percent scored it with a 6 or 7, indicating strong agreement. Most of the organizations my opponent lists are governmental, meaning that they have that conflict of interest I mentioned earlier.[5][6] The graphs my opponent provides are either irrelevant, are refuted by my argument against the consensus above, or show a rough correlation between CO2 and temperature that I have already shown to not exist. It is also relevant to note that the r^2 correlation between CO2 and temperature over the last century is only 0.44, which is considered poor.[7] Also, as for the other greenhouse gases, my opponent has not argued for them specifically, concentrating on CO2 in his arguments. Regardless, I will simply refer to my fourth argument in the last round on greenhouse gas absorption. Methane has an absorption band (at 8 micrometres) that largely overlaps with water vapor, so an increase in methane has little effect on temperature. In addition to methane, the wavelengths of light that nitrous oxide absorb largely overlap with that of water vapor, so an increase in nitrous oxide also has little effect on temperature. Those are the main greenhouse gases. I will address these more if my opponent considers them any more than he has.[1] Conclusion My opponent's entire argument in this round is a fallacious attempt to make his position seem valid when he can't refute the arguments I made in the first round. Again, science does not work by consensus, and even so, there really is no "consensus". Pro has never gotten near satisfying his BoP that humans are causing climate change. Sources [1]: http://www.friendsofscience.org... [2]: http://wattsupwiththat.com... [3]: http://www.plosone.org... [4]: http://wattsupwiththat.com... [5]: http://www.petitionproject.org... [6]: http://heartland.org... [7]: http://wattsupwiththat.com...

    • https://www.debate.org/debates/That-Humans-Are-Causing-Climate-Change/1/
  • CON

    I have to clarify some things, because I don"t think we...

    Climate Change is man caused

    Thank you for clarifying on that. I think you were hoping to win the debate just on that title, which in itself speaks indefinitely. I have to clarify some things, because I don"t think we have a debate here. First, the title is plain wrong. Climate change happens regardless of human activity. It "can be explained by natural causes, such as changes in solar energy, volcanic eruptions, and natural changes in greenhouse gas (GHG) concentrations." (the same EPA source as my opponent). The last time CO2 levels were as high as today, it was around 15 million years ago. During that time, species still thrived. Second, burning fossil fuels is the most cost-effective, and the least damaging. Yes, I said least damaging. I won"t get into how because that is not the subject of our debate. Here are just a few: [2] http://news.nationalgeographic.com... [3] http://www.newscientist.com... Long gone is the time when most scientists scratched their heads about ice caps melting. Yes, 2014 is the hottest year. Yes, I have to clarify some things, because I don"t think we have a debate here. First, the title is plain wrong. Climate change happens regardless of human activity. It "can be explained by natural causes, such as changes in solar energy, volcanic eruptions, and natural changes in greenhouse gas (GHG) concentrations." (the same EPA source as my opponent). The last time CO2 levels were as high as today, it was around 15 million years ago. During that time, species still thrived. Second, burning fossil fuels is the most cost-effective, and the least damaging. Yes, I said least damaging. I won"t get into how because that is not the subject of our debate. Here are just a few: [2] http://news.nationalgeographic.com... [3] http://www.newscientist.com... Long gone is the time when most scientists scratched their heads about ice caps melting. Yes, 2014 is the hottest year. Yes, climate change is happening. But at the same time, we are putting planks for a global cooling, in a sense. As of right now, I can safely say we are utilizing more renewable energy than at any other time in our existence. As for my opponents sources, I don"t see any of them mentioning that. I"m sorry, but the subject of your sources (yubanet, epa, time, scientific american) either state what global warming is, or are in redundant in stating "2014 is the hottest year". None of them are the subject of human activity causing global warming. If you still insist of debating the topic, I would be glad to, although as I"ve mentioned, there really is no debate.

    • https://www.debate.org/debates/Climate-Change-is-man-caused/1/
  • PRO

    First round is just for acceptance and definitions if...

    Anthropogenic climate change.

    I will contend that anthropegenic climate change exists. The contender will contend that anthropegenic climate change is non-existent. Structure R1 Acceptance & definitions R2 Arguments R3 Rebuttals R4 Defense Burden of proof Burden of proof will be shared equally. This is because I am making the affrimative claim and the instiagator, yet am arguing for what is normally accepted in the scientific community. Therefore, the burdens of proof cancel each other out resulting in neutral 50/50 burden of proof. Further explanation of r1 setup. First round is just for acceptance and definitions if need be. Common definitions are assumed, unless otherwise stated and agreed upon. Round two each person will make their argument, but no direct responses to the other person' argument. Focus on making a convincing argument that if not for your opponent's rebuttal would sell your audience. This is the only round to make new arguments for your case. Round three each person will respond directly to their opponent's round two argument pointing out any logical fallacies and attempt to find flaws. Round four each person defends their round argument against their opponent's round three argument. For example if I say that Common definitions are assumed, unless otherwise stated and agreed upon. Round two each person will make their argument, but no direct responses to the other person' argument. Focus on making a convincing argument that if not for your opponent's rebuttal would sell your audience. This is the only round to make new arguments for your case. Round three each person will respond directly to their opponent's round two argument pointing out any logical fallacies and attempt to find flaws. Round four each person defends their round argument against their opponent's round three argument. For example if I say that is a cherry picking fallacy in round two, my opponent would explain why me calling their argument a cherry picking fallacy is incorrect. Thank you in advance for accepting the debate.

    • https://www.debate.org/debates/Anthropogenic-climate-change./1/
  • PRO

    With most of its army in Europe fighting Napoleon,...

    Climate Change is a real issue

    The War of 1812 was a conflict fought between the United States and its allies, And the United Kingdom of Great Britain and Ireland and its allies. It began when the United States declared war in June 1812, And ended mostly in the situation as it existed before the war when a peace treaty agreed to earlier was ratified by the United States in February 1815. Historians in Britain often see it as a minor theatre of the Napoleonic Wars, While historians in North America see it as a war in its own right; it can be considered part of the American Indian Wars and Sixty Years' War. From the outbreak of war with Napoleonic France in 1803, Britain had enforced a naval blockade to choke off neutral trade to France, Which the United States contested as illegal under international law; to man the blockade, Britain pressed merchant sailors into the Royal Navy, Including Americans. American sentiment grew increasingly hostile toward Britain due to incidents such as the 1807 Chesapeake"Leopard affair, And the British were outraged by the 1811 Little Belt affair. [10] Britain supplied arms to Native Americans, Who raided European-American settlers on the American frontier, Hindering the expansion of the United States and provoking resentment. [11] Although the debate on whether the desire to annex some or all of British North America (Canada) contributed to the American decision to go to war, The reasoning for invasion was mainly strategical. [12] President James Madison signed into law the declaration of war after heavy pressure from the War Hawks in the United States Congress. [13] Federalist opposition to the War of 1812 in the United States affected its prosecution, Especially in New England, Where it was referred to as "Mr. Madison's War". With most of its army in Europe fighting Napoleon, Britain adopted a defensive strategy, With offensive operations initially limited to the border and the western frontier, With help from its Native American allies. American military defeats at the Siege of Detroit and the Battle of Queenston Heights thwarted attempts to seize Upper Canada, Improving British morale. American attempts to invade Lower Canada and capture Montreal also failed. [14] In 1813, The United States won the Battle of Lake Erie, Gaining control of the lake and defeating Tecumseh's Confederacy at the Battle of the Thames, Thereby defeating Britain's largest Native American ally, A primary war goal. The Americans made a final attempt to invade Canada, But the Battle of Lundy's Lane during the summer of 1814 was fought to a draw. At sea, The powerful Royal Navy blockaded American ports, Cutting off trade[15] and allowing the British to raid the coast at will. In 1814, The British burned Washington, But the Americans later repulsed British attempts to invade New York and Maryland, Ending invasions from Canada into the northern and mid-Atlantic states. In early 1815, After a peace treaty had been signed, But before this news had reached the Americas, The United States defeated the British Army near New Orleans, Louisiana. [16] Fighting also took place in West Florida, Where a two-day battle for the city of Pensacola ended in Spanish surrender. [17] In Britain, There was mounting opposition to wartime taxation and merchants lobbied for the resumption of trade with the United States. With the abdication of Napoleon, Britain's war with France ended and Britain stopped impressment generally. This made moot the issue of American sailor impressment and removed one of the original causes of the war. The British then increased the strength of their blockade of the United States coast which had a crippling effect on the American economy. [15][18] Peace negotiations began in August 1814 and the Treaty of Ghent was signed on 24 December 1814. The treaty was unanimously ratified by the United States Senate on 17 February 1815, Ending the war with no boundary changes[19][20] except for the disposition of some islands in Passamaquoddy Bay, An issue that was resolved after the war. [21] A popular view is that "[e]verybody's happy with the outcome of the war. Americans are happy because they think they won, The Canadians are happy because they know they won and avoided being swallowed up by the United States, And the British are happiest because they've forgotten all about it";[22] although indigenous nations are generally seen among historians as the real losers. News of the peace finally reached the United States in February 1815, About the same time as news of the victory at New Orleans;[23] Americans triumphantly celebrated the restoration of their national honour, Leading to the collapse of anti-war sentiment and the beginning of the Era of Good Feelings, A period of national unity. [24] While Britain quickly forgot about the war, Nationalistic mythology around it took hold in both the United States and Upper Canada. Both the restoration of honour and the "Second War of Independence" are important themes in American historiography and are considered important results by historians. [25][26][27] The failure of the invasion of British Canada advanced the evolving concept of Canadian identity and of Canada as a distinct region that would continue to evolve into a nation.

    • https://www.debate.org/debates/Climate-Change-is-a-real-issue/2/
  • CON

    First I would like to thank my opponent for the...

    Man Made Climate Change Is Fake

    First I would like to thank my opponent for the opportunity for this debate, I would like to start by making a few observations: 1) I am arguing that the human race has had a measurable impact on global warming. I acknowledge that natural climate change does happen. I will debate that humans are contributing to recent global warming. 2) My opponent says that quoting a consensus is not science. However, it has to be seen that a scientific study by real scientists is going to be more reliable than some kind of theory or home conducted experiment. Before we begin I would just like to ask for evidence behind the claims in point 3 just for reference. I will begin by analyzing my opponents case and then move on to my own. My opponents 1st point states that there is no hard proof that CO2 from humans is the most important part to causing global warming. Even if it's not the MOST important part, if humans have any impact than we are changing the climate from what is natural. I will provide empirical evidence that in fact it has a huge impact if not the biggest. 2: My opponent argues that the computer models don't work. Even if this is true, there is other evidence that proves CO2 does have an impact. Also, computer models are just a way of prediction and we can't expect them to be 100% correct. 3: My opponent argued that CO2 is a weak greenhouse gas. My opponent argues that water vapor has a stronger green house effect. Even if this is true, adding CO2 to the atmosphere is actually a cause for more humid atmosphere making it worse. So even if you believe my opponent that it is actually the water vapor that is the more disastrous greenhouse gas, this problem stems from CO2 also, which stems from humans. http://www.nasa.gov... Basically my opponent is stating we would need more CO2 to see an impact which is not a scientific claim and there is an undoubted correlation between CO2 and warming. 4: In response to my opponents claim that their is less CO2 now than ever before, according to Freedman at climate central, "CO2 levels are far higher now than they have been for anytime during the past 800,000 years." http://www.climatecentral.org... Also, from NASA. "atmospheric carbon dioxide does naturally fluctuate, but it's never been has high as it is today" http://globalclimate.ucr.edu... (i would recommend looking at this graph for the link provided! 5: Your statement about the temperature increasing for the past 20,000 years is true, however that was when the last severe cold stage in the climate happened. So naturally the climate is on its way to being warmer. Today though, we are seeing this clearly attributed to CO2 in the air from humans as the temperature goes beyond what would be seen as natural. As for the political arguments. That is probably all true, but does not prove that humans don't have to do with global warming. Now for my case: 1: Humans are altering the climate. My evidence comes in 3 stages. 1: My opponent has acknowledged that CO2 is a green house gas. Green house gasses cause global warming. 2: humans are netting 15 gigatons of carbon into the atmosphere that has no place in the carbon cycle. Prior to industry all carbon fit into the cycle. https://www.newscientist.com... 3: If CO2 causes warming, and humans are omitting extra CO2 that we are having an impact on climate. Thus I hold my claim that humans are impacting climate change. Some may still remain skeptical in believing that there are things that may not be CO2 causing global warming. While other causes like volcanic eruptions, or the tilt of the earth have had causes thousands of year ago. We are seeing trends in the the atmoshphere that point to CO2 being the cause as opposed to thermal energy. Check out the video here. https://www.skepticalscience.com...

    • https://www.debate.org/debates/Man-Made-Climate-Change-Is-Fake/1/
  • CON

    Dissent from CO2 theory is viewed by proponents as...

    Climate change

    We have agreed the global warming exists. I know of no scientist who dissents from CO2 theory that denies that global warming exists, although perhaps there is one somewhere. The idea that the claim of "no global warming" is common is nonsense thrown up by CO2 theorists for the purpose of claiming victory when they prove that global warming exists. It was never in dispute. Pro wonders how it can be that temperatures can be claimed to stable or even decreasing for the past decade while conceding that global warming exists. There is nothing mysterious, it depends upon the time scale. For example, the overall trend has been warming since the last ice age, decreasing since the Holocene Optimum, and increasing since the Little Ice Age. The last decade has been about stable. Pro apparently grants that the IPCC is 70% government bureaucrats, that the conclusions are not subject to peer review, and that the scientists involved to not get to vote on the report. Pro objects only that the scientist, Landsea, who resigned in protest only suspected political motivation but didn't actually observe it. Landsea's exact words were, "I am withdrawing because I have come to view the part of the IPCC to which my expertise is relevant as having become politicized." Landsea spelled it out separately: "The lead author of the fourth AR's chapter on climate observations, Kevin Trenberth, participated in a press conference that warned of increasing hurricane activity as a result of global warming. It is common to hear that man-made global warming represents the "consensus" of science, yet the use of hurricanes and cyclones as a marker of global warming represents a clear-cut case of the consensus being roundly ignored. Both the second and third IPCC assessments concluded that there was no global warming signal found in the hurricane record. Moreover, most climate models predict future warming will have only a small effect--if any--on hurricane strength. "It is beyond me," Landsea wrote, "why my colleagues would utilize the media to push an unsupported agenda that recent hurricane activity has been due to global warming."" http://www.aei.org... I never said the IPCC leadership had a secret agenda. They are sincere in their beliefs and aim to save the world by suppressing dissent. Look at the past scientific consensus that homosexuality was a form of mental illness, or that the Steady State Theory was correct. No doubt their were strong beliefs involved, but what ultimately won was the science. There is perhaps a thousand times as much money in supporting global warming as opposing it. Tens of billions billions flow from governments into the global warming industry every year. Al Gore alone has made $100 million off of it. If there is suspicion about motivation, it should be directed at advocates. Exxon puts about $1.5 million per year into dissent, which is nothing by comparison. Dissent from CO2 theory is viewed by proponents as heresy, which is why they make such a big deal about in being evil. The book "The Deniers" documents in detail the abuse levied upon anyone who does not toe the line. Dissenting scientists have absolutely impeccable credentials and publish regularly in peer-reviewed journals. Pro made a string of assertions about CO2, but he didn't make a single scientific reference in support of his assertions. In the previous round I provided a link to an article by a climate scientist that explained the weak dependence of temperature on CO2. In addition, "All of the IPCC climate models reduce low- and middle-altitude cloud cover with warming, a positive feedback. This is the main reason for the differences in warming produced by different climate models (Trenberth and Fasullo, 2009). I predict that this kind of model behavior will eventually be shown to be incorrect. And while the authors were loathe to admit it, there is already some evidence showing up in the peer-reviewed scientific literature that this is the case (Spencer et al., 2007; Caldwell and Bretherton, 2009)." http://www.drroyspencer.com... Con produced an excellent reference in the last round, http://www.geocraft.com.... In particular, the graph http://www.geocraft.com... shows the long term relationship between climate and CO2. In the long history, there is no relationship. Note that on the graph, the last 600,000 years is a collapsed to a point. The author of Con's reference describes the lack of a relationship relationship between CO2 and temperature: "Average global temperatures in the Early Carboniferous Period were hot- approximately 20� C (68� F). However, cooling during the Middle Carboniferous reduced average global temperatures to about 12� C (54� F). As shown on the chart below, this is comparable to the average global temperature on Earth today! ... Earth's atmosphere today contains about 380 ppm CO2 (0.038%). Compared to former geologic times, our present atmosphere, like the Late Carboniferous atmosphere, is CO2- impoverished! In the last 600 million years of Earth's history only the Carboniferous Period and our present age, the Quaternary Period, have witnessed CO2 levels less than 400 ppm. ... To the consternation of global warming proponents, the Late Ordovician Period was also an Ice Age while at the same time CO2 concentrations then were nearly 12 times higher than today-- 4400 ppm. According to greenhouse theory, Earth should have been exceedingly hot. Instead, global temperatures were no warmer than today." CO2 levels have been dropping for 600 million years, and temperature has been going up and down independent of the CO2. There was an ice age with 12 times the atmospheric CO2. Right now we are both CO2 deprived and temperature deprived relative to the history. It's worth noting where most of the carbon has gone. It is not mainly in fossil fuels. It is in the carbonates in limestone formed as the skeletons of sea creatures accumulate on the ocean floor. Pro's reference disproves the theory that the earth's temperature is very sensitive to CO2. There is no possible consistent rationalization for having an ice age with 12 times the CO2 if temperature depends strongly on CO2. In fact, the temperature on Venus proves *insensitivity* to CO2. The earth has 380 ppm of CO2. Venus has 960,000 ppm. The surface of Venus is 867 F, which about 737 K. Earth is 288 K. Venus is 0.7 of earth's distance to the sun. Since radiation falls as the square of the distance, if Venus had no increased greenhouse effect, it would be twice as hot as earth due to being closer to the sun; it would be 576 K. So having roughly 3500 times as much CO2 on Venus produces a rise of about 150 K = 150 C. If the effect were linear, doubling earth's CO2 would therefore produce a temperature rise of 150/3500 = 0.05 degrees or so. That is extremely insensitive. There is a factor of several thousand to be explained between what CO2 global warming theory predicts and the observation of Venus. The rest of Pro's references are the equivalent of blog posts in which non-scientists state their faith and proclaim victory. Pro is quite right that there are many factors affecting climate. Pro's burden is to prove that right now the most important factor is CO2. Global warming advocates are adamant that for the past few decades the Sun has been inactive, and so there was nothing to explain the rise in temperature from the 70's to late 90s except CO2. The test of the theory is whether it would predict the future. It has not. Temperatures have remained stable or decreased slightly for the past decade, despite CO2 rising and continued claims that CO2 is dominating climate. What CO2 theorists overlook is the activity of the solar magnetosphere, which tracks recent climate quite well. It's not CO2, it's the sun. The resolution is negated.

    • https://www.debate.org/debates/Climate-change/1/