• CON

    The increased hurricane activity over the past decade...

    Global Warming is Real and is Manmade!

    I disagree with my opponent's assertion. The following information will prove that global warming is a false theory. 1. The 20th century warming of 1-1.4"F is within the +/- 5"F range of the past 3,000 years. A 2003 study by researchers at the Harvard-Smithsonian Center for Astrophysics shows temperatures from 1000-1100 AD (before fossil fuel use) that are comparable to those from 1900-1990. 2. Rising CO2 levels are a result of global warming, not a cause of it. As temperatures increase, CO2 is released from "carbon sinks" such as the oceans or the Arctic tundra. Measurements of ice core samples show that over the last four climactic cycles (past 240,000 years) periods of global warming preceded global increases in CO2. 3. The increased hurricane activity over the past decade (1995-2005), including hurricane Katrina, is not the result of human-induced climate change; it is the result of cyclical tropical cyclone patterns, driven primarily by natural ocean currents, according to the National Oceanic and Atmospheric Administration's (NOAA) testimony in the US Senate on Sep. 20, 2005. 4. The general consensus that the earth has warmed during the 20th century is based upon flawed temperature measurements. These measurements, taken from surface monitoring stations set up by the National Weather Service (NWS), are often contaminated by the "heat island effect." According to a Mar. 2009 study published by the Heartland Institute, 89% of NWS monitoring stations are too close to artificial heat sources such as large asphalt parking lots, air conditioners, heaters and other sources of artificial heat. 5. Theories of naturally caused climate change are often ignored by "mainstream" scientists and organizations because many research scientists are more interested in maintainining the flow of federal grant money for climate change research than in questioning the basic theory of human causation. From 1998-2009, nearly $25 billion in federal funds was allocated for climate science research. Researchers who question human-induced climate change often do not receive grant money for research projects. Your turn. Sources: 1. Arthur B. Robinson, PhD, et al., "Environmental Effects of Increased Atmospheric Carbon Dioxide" (3 MB) , Journal of American Physicians and Surgeons, Fall 2007 2. Willie Soon, PhD, and Sallie Baliunas, PhD, "Proxy Climatic and Environmental Changes of the Past 1000 Years" (660 KB) , Climate Research, 2003 3. Anders Moberg, PhD, et al., "Highly Variable Northern Hemisphere Temperatures Reconstructed From Low and High Resolution Proxy Data," Nature, Feb. 2005 I will have a more complete source list in the comments section.

    • https://www.debate.org/debates/Global-Warming-is-Real-and-is-Manmade/1/
  • PRO

    Mauna Loa This point, apart from being extremely...

    Reserved for FollowerofChrist: Climate change is real and a massive threat to humanity.

    Maurice You still haven't proved that he's a criminal, and all I have is that he slapped his name on a few things. Not the first instigator, not by a long shot. And even if he was a criminal, it doesn't disprove the science. Isaac Newton had people killed(he was in charge of killing counterfeiters), should we discredit all of his findings? This is nothing but an ad hominem. 2. Mauna Loa This point, apart from being extremely childish, is basically appeal to the stone. Also, see: https://skepticalscience.com...; 3. Sea levels. This is appeal to authority to the max, and you didn't even back up the authority that you gave him. And you still have clearly not even clicked on my sources. (#4 doesn't exist for some reason) 5. Appeal to authority. Jesus christ, I shouldn't have to link this to explain, but here you go: https://en.wikipedia.org...; Nota bene: when your argument begins with "Drrrrr????" and ends with "lol," you should probably rethink it. Aaaand then it's topped off with a juicy false equivalency. NOAA and IPCC are groups, do have peer review, and use the scientific process. Individuals are not subject to this. CONCLUSION I strongly urge a vote for affirmative(pro), as my opponent has not provided any real evidence, nor countered my own points, his arguments devolving into personal attacks, proof by assertion, and childish rhetoric.

  • CON

    At this time, when CO2 increased, is when scientists said...

    Taking a Stand Against Climate Change with Greener Technologies

    Hello, Mac, and I am glad you instigated this debate. My opponent’s arguments rely on three main contentions: 1) Global warming is real and is a threat 2) Global warming is caused by human activity 3) We should attempt to stop global warming I will refute them as follows: 1. Global warming is real and a threat My opponent’s main point here is the expected sea level rise. However, some scientific papers have been released showing the sea level rise has been over predicted and that in many parts of the world, sea level rise isn’t happening at all. The IPCC’s data claiming massive sea level rise has been grossly exaggerated and is utterly incorrect. For example, Bangladesh should have been engulfed in water, or should be seeing significant problems. In 2007, the IPCC proclaimed their doomsday. However recent data shows the sea levels there are not rising [1]. My opponent also forgets the possible benefits of Global Warming. For example, parts of Canada, Russia, and Argentina too cold for industrialization and farming would become reachable. Historically, warmer temperatures in the Northern Hemisphere acted as a benefit for the Vikings. Greenland and Iceland’s productivity rose, the increased rain caused better harvests, and lead to the Vikings making landfall in the New World. The increased CO2 would make plant growth easier and enhance the world, making it muck more habitable. Some of the warmest periods in our history, the world flourished with resources aplenty; a warmer climate could easily be good for you and me [2]. My opponents other point here is the reality of global warming, and here I agree. There has been an overall warming trend since 1850, however I dispute current warming. Global warming stopped in 1997, with an overall decrease in temperature since then. Using NOAA data starting from 2000, to avoid the El Niño year in 1998 (which ‘refutes’ the global warming stopped theory) shows no change. A slight decrease in temperature, although the trend is less. There has been no warming since 1997, and no statistically significant warming since 1995 [3]. 2. Humans are the cause of global warming This is the main contention of the debate; if it is awful, but natural, we can’t stop it: changing our ways of life would be worthless. If it is still happening but is natural, we can’t stop it and changing would, again, be a pointless exercise. So, I explain the reasoning on why claiming humans cause global warming is illogical. First, CO2 and other emissions increase during a good economy. After the 1940’s, a post-war economic boom occurred. At this time, when CO2 increased, is when scientists said humans first began to have a large impact on global warming. Interestingly, temperatures decreased at this time. Alarmists have tried to counter these claims, but their logic fails to hold up [4]. Either way, my opponent has only assumed humans are the main cause of the warming; he has given little evidence himself that we are the cause. Correlation is always an argument in this debate. People have argued there is a strong correlation between CO2 and temperature, however this is simply untrue. CO2 only correlates r= .44, with 1 being perfect and 0 being none at all. This means the correlation rates fair to poor. The sun scores better, with an r= .57, meaning it rates to fair to good. And the PDO correlates the best, with an 0.83 rating good [5]. It seems hard to argue CO2 causes the warming when it fails to correlate to a degree of ‘good’ and its rivals for the title—the sun and the PDO—correlate much better then it. Further, the current warming should have been predicted, as according to Singers 1,500 sun cycle the current warming was right on time. The majority of geologists—about 50%—believe global warming is a natural cycle and the current warming is right on time [6]. Other explanations, like cosmic rays, also seems like a possible factors. In short wording: Humans likely do not play a major role in global warming, although we likely exacerbate the situation a little bit. 3. It should be stopped—specifically with green energy If my opponent wishes to bring up another solution, I am all ears. However he currently argues green energy is the solution. Lets go down the list: a) Wind power There is a simple problem with wind: the fact that wind is not always blowing, and its upfront capital costs more then outweighs the fact that wind, itself, is free. Wind itself has lees value then its fossil fuel competitors and must be placed in areas with constant (or higher then average) wind amounts, limiting its universality. Unlike Fossil fuel plants, which can be planted anywhere. There is other, in my opinion more real, issues then global warming. Wind stations kill the avian populations and take up a lot of space, often ruining natural beauty. Many rodents actually like the wind farms and live inside the fan. Rodents—a food source for many predators—get killed trying to eat them. And, obviously, other birds will fly through the places and get whacked and die. Some Wind projects take 10 billion pounds of raw materials. If we assume global warming is man made, the CO2 created by the mining and construction often times shrinks the overall benefit. b) Solar Potential market chare for solar has been overestimated time and time again and the subsidies that the industry relies on—because it is not competitive with fossil fuel because the marker does not favor it—costs millions of dollars, even more then the Wind subsidies. Thermal solar plants need 1,000 times more the resources fossil fuel plants need. Some studies argue: “Solar Two looks good on paper, and it is expected to provide steady baseload electricity as well as late afternoon peaking capacity, but the future of all the central solar generators is in doubt. They are expensive to build, their very scale escalates financial risks--as with nuclear power--and their massive height (in excess of 200 meters) may attract opposition.”[7] Other Solar industries (there are many) require millions of dollars to operate and to even be on the market and commercialize their products. Many environmentalists have a actually given up on some solar markets, like photovoltaic, in favor of nuclear (something they usually despise) because of the destruction of those solar plants. c) Hydro Even environmentalists have left hydro power, uttering the power source in the same breath as they do natural gas, coal, and nuclear. From a conservative standpoint, the construction of Hydro power is actually very invasive on the surrounding community and cost millions. On a more liberal note, the hydro plants take a lot of resources to build and kill and disturb many fish populations. The cost of current hydro plants are 5-6 times more expensive per kilowatt hour then other fossil fuels. d) Case study: Michigan There has been no net job growth because of their green energy, they have created jobs in one sector but have taken them away from another. Their energy prices have increased and their prices continue to increase. Other states, like North Dakota, have welcomed fossil fuels and have had a net job growth and prices fall. Studies have shown for every one job created in their oil industry, another three are created because of decreased energy costs [8]. CONCLUSION: I have proven my opponents premises to be incorrect and his solution of green energy is impractical, harmful to the economy, and, sometimes, not even green. (longest url's shortened to make room) 1. http://tinyurl.com...; 2. http://www.stanford.edu... 3. http://wattsupwiththat.com... 4. http://tinyurl.com...; 5. http://wattsupwiththat.com... 6. MacRae, Paul. False Alarm: Global Warming-- Facts versus Fears. Victoria, B.C.: Spring Bay, 2010. Print. 7. http://www.cato.org... 8. http://www.heritage.org...

    • https://www.debate.org/debates/Taking-a-Stand-Against-Climate-Change-with-Greener-Technologies/1/
  • CON

    I have argued against Anthropogenic Global Warming,...

    Climate denial is unusual in the scientific community

    I will point out the flaws in Mr. Merrill's arguments: This debate is entitled: "Climate denial is unusual in the scientific community" To that end, Mr. Merrill offered a simple challenge, but no definitions or ground rules for the debate. Because of that failure I offered definitions to clear up the "Anthropogenic Global Warming v. Global Warming" debate, and offered some of the arguments of AGW Alarmist and several Sources that argue against those claims. The rest of Mr. Merrill's writings largely ignore the argument, taking us from 20 points of contention to only 2. I then thoroughly deal with those 2 points of contention in Round 2, and reintroduce one previous point from Round 1, because Mr. Merrill did not address it. In Round 3, Mr. Merrill then, admittedly, misrepresents some data while dealing, again, with only 2 points of contention. Seeing Mr. Merrill's unwillingness to deal with the great many issues affronting AGW Alarmists, I provide several links that deal with his original claims; there being a lack of support for AGW Denial, and I reiterate one specific point of contention, and then deal with 22 of his specific claims. Mr. Merrill then changes tactic and provides some excuses as an attempt to deal with the Politicization of Climate Science. Mr. Merrill also provides 8 sourced quotes from AGW Alarmists/Activists. I replied with 9 sourced quotes of AGW Deniers and I point out a group of 13 ACTIVIST Scientists, 8 of whom worked on the report for the IPCC, and I gave a list of 10 Scientists who have left various groups (including the IPCC) over AGW "Science". Mr. Merrill does not deal with any of what was presented in Round 4, but instead, in Round 5, opts to try to convince the audience; using logical fallacies and confusing the definitions of Anthropogenic Global Warming and Global Warming. I believe I have show there is great support for Climate Denial in the scientific community; that the AWG Alarmist community is corrupted by politics and activism. Mr. Merrill wanted a 20:1 ratio of scientists; AGW Supporters v. Deniers. Someone would have to verify the actual count and remove the duplicates from all sources, as they undoubtedly contained duplicate researchers, but lets just make this easy: Mr. Merrill started out with 25 AWG supporting sources with a total of about 200 Authors. This is an average of 8 AWG Supporting Scientists per source. In a sample of 21 of my links (from Round 2), I found 29 peer reviewed papers including about 150 authors, for an average of about 7 authors per paper. This nets nearly a 1:1 (8:7) ratio of scientists who do and do not support AGW. Based on that alone I met and beat Mr. Merrill's challenge. This only leaves Mr. Merrill to deal with the 20 points of contention, of which he only tries to deal with 5. I believe I understand why Mr. Merrill refuses to deal with all the points of contention, or any of the support for natural and normal Global Warming: In the 4th round, I provide an additional link to this peer reviewed study, http://oss.sagepub.com... , which shows that a great many scientists are skeptical of AGW (I did not use this in my assessment of the 21 links in Round 2). I already pointed out how Mr. Merrill failed to deal with ANY points made in the 4th round. Therefore, the only conclusion I can make is; the support just isn't there in the quantity (and/or quality) Mr. Merrill would like or need to prove his assertions. In other words, his lack of dealing with the points of contention is proof his original assertion is wrong. Unfortunately for Mr. Merrill, I was not arguing against Global Warming, as he asserts (Logical Fallacy: Straw Man). As I presented, Global Warming is a natural and normal process that we experience coming out of the last Ice Age (we are in an Intraglacial period, which Mr. Merrill also ignores). I have argued against Anthropogenic Global Warming, Climate Science Alarmism and Activism. I have provided an abundant number of sources against it, including several links to the data itself. And a great many scientists who are "AGW Deniers" simply by doing research that denies the Establishment's supposed "consensus". Review of the Points of Contention: Mr. Merrill claims: There is little support in the scientific community for AGW Denial: Claim proven false. CO2 causes Atmosphere warming: Claim proven false; Warming precedes CO2. Ozone: Ozone is repairing, not causing AGW. CO2 is warming the Oceans: Claim is Unclear, but the evidence, as provided, isn't showing Oceanic Warming. There is no Alarmism or Activism in the Climate Science Community: Claim proven false. Claims Mr. Merrill does not deal with: CO2 levels have been higher in the past than they are today: Claim proven. CO2 levels are beneficial: Claim proven. Earth has natural mechanisms for dealing with increased CO2: Claim proven. Climate Change is not adversely affecting Cyclones: Claim proven. Climate Change is not adversely affecting Wildfires: Claim proven. Climate Change is not adversely affecting Arctic or Antarctic ice: Claim proven. Climate Change is not adversely affecting Polar Bears: Claim proven. Climate Change is not adversely affecting Sea Level: Claim proven. Climate Change is normal and natural: Claim appears to have been proven. There is a difference between "Anthropogenic Global Warming" and "Global Warming": Point proven. There is no "consensus" among scientists on this subject, regardless of IPCC claims: Point proven. There is uncertainty, regardless of IPCC claims: Point proven. There are other theories, largely ignored, for the observed Global Warming: Point proven. The rest of Mr. Merrill's Round 5 post was a poorly formatted table, where he, again, misrepresents the data, for instance: Example 1: Organization: heartland.org Authors / Researchers: 1 Scientific Accreditation: N AGW Acknowledgement: Y Heartland is a strong opponent of AGW, and proponent of Natural and Normal Global Warming. Therefore they do not "acknowledge" AGW. Did Mr. Merrill misread? Example 2: Organization: National Interagency Fire Center Authors / Researchers: Organization Scientific Accreditation: Established AGW Acknowledgement: Off Topic Unfortunately for Mr. Merrill, this is very much "on topic" as the claim by the IPCC and Climate Alarmists is how AGW will make conditions more amenable to more fires that do more damage. The Observations do not support this conclusion. And the list goes on. I estimate I have about 2000 characters left in this reply, but I will not torture the readers with a full accounting of Mr. Merrill's latest attempt to avoid the discussion. This list as provided shows one of Mr. Merrill's greatest flaws: he takes things in a vacuum. Each point, in and of itself, is NOTHING without the rest of the information provided. For Example: CO2 concentrations are increasing. History must be observed: what has happened in the past? Has CO2 ever been this high? Does CO2 cause warming, or does CO2 come after the warming? Biosphere reactions must be observed: what happens when CO2 increases? What happens to plants? What happens to animals? What happens to the atmosphere? What happens to the oceans? Yet, with each point of contention that Mr. Merrill attempted to deal with, he is unwilling or unable to take into account all the information available. Therefore his arguments are very narrow in scope and shallow in content. In any case, Mr. Merrill, it is unfortunate that you spent most of your 50,000 characters avoiding the discussion. I was hoping to see new evidences, new information; and I was really hoping for a detailed and supported argument about the lack of support for AGW. Instead, I find myself disappointed by the avoidance, the abundance of Logical Fallacies, the lack of an actual argument, and the failure to follow good debating decorum. Good luck to you in whatever further arguments you decide to undertake; from my experience here, you are going to need it.

  • PRO

    You know what 1850 was? ... I will leave you to suppose...

    Global Warming is real, get over it.

    "You know what 1850 was? The end of the Little Ice Age. Its only natural that it is occurring." Temperatures after ice-ages will rise, but they do not normally rise by almost a degree in 150 years! It is an incredible rate of change (on a global scale) and points to something much more servere than 'only a little temperature rise'. "The poles are well below freezing, think -20 Celcius. 2/3 of a degree, not that significant. Also, Antartica has gotten on average colder. (GISS)" I've got no idea what GISS is, but i'm not sure there entirely accurate. The British Antarctic Survey has found the antarctic peninsula to be "one of the fastest warming parts of the planet". http://www.antarctica.ac.uk... "Climate change implies a significant shift in the way our climate works. There is no shift, as I have proven." The temperature is rising...this is the only way to begin a shift in the way the climate works. I will leave you to suppose that, hyperthetically, you had to imagine a world where climate change was happening... what would you look for? A sudden rise of temperatures? Yearly 'hottest year ever' awards? Polar ice caps beginning to melt? Hmm the reality isnt that far away is it.

    • https://www.debate.org/debates/Global-Warming-is-real-get-over-it./1/
  • PRO

    Yes, but natural sinks of Co2 outweigh natural sources....

    ManBearPig is real.

    Round two arguments Picture of consensus studies. [2] Picture of expertise and agreement graph. [2] Graph of Co2 highest in 800,000 years. [3] Pie graph of Co2 being main driver of climate change [4] Temperature graph of ocean, land, ice, and air starting at 1960 [5] Glacier cumulative volume decreasing graph. [6] Human fingerprint picture. [7] As you can see there can be no doubt from the above pictures and graphs that climate change is happening, humans are the cause, and Co2 is the main driver. A person may ask, but is there not natural sources of Co2? Yes, but natural sinks of Co2 outweigh natural sources. Meaning nature is a net sink of Co2. This can be seen by more Co2 going into the ocean than out and the resulting ocean acidification. Sources 2. https://skepticalscience.com... 3. http://www.climatecentral.org... 4. https://www.epa.gov... 5. https://skepticalscience.com... 6. https://skepticalscience.com... 7. https://skepticalscience.com...

    • https://www.debate.org/debates/ManBearPig-is-real./2/
  • CON

    Although there has been some attention focussed on the...

    Protests have drawn attention to climate issues

    Although there has been some attention focussed on the Camp for Climate Change the main press 'attraction' has been the protests outside bank and the antipathy towards city workers and capitalism in general. As usual the sensationalist press wants to cover violence rather than peaceful protest and with scuffles breaking out at Bank the climate protestors efforts have been overshadowed.

  • PRO

    And even if it did, progress would be too slow. ......

    Recycling paper is a good way to fight climate change.

    You said all other things being equal, if we follow this we are turning this into a completely hypothetical debate, and means this debate would serve no purpose, it would be totally pointless. You have to consider reality. The impact of recycling simply is not that great on the tree farming industry. Even recycled paper requires a certain amount of new pulp to be added. As well, not everyone differentiates between reycled and non-recycled paper, and this means that the two are not always competing. Essentially, your next point is rather similar to the first, but I will say that if recycled paper has an effect on the demand for new paper, it is very small. New paper still greatly outweights old paper in terms of production. I was saying that with the rising demand, the amount of trees would either slowly grow, or at least stay neutral. 2. Onto the subject of natural forests v. farmed forests. A. When you cut down a tree, you reduce the amount of carbon dioxide it will be using, and thus it will be less useful to the environment. B. Older trees do not stop growing unless they are dead. Perhaps you've seen the rings? In any case, an older/larger tree will always use more carbon dioxide than a smaller one, such as the ones coming from a tree farm. C. Cutting down forests will reduce the amount of carbon dioxide they use, if they are smaller, they do not need as much carbon dioxide as they did when they were bigger, it's pretty simple. D. Of course commercial trees have roots, but they don't have as developed of a root system. You also didn't deny that farmed trees are less beneficial when it comes to biodiversity and preventing erosion, which takes me to the next point. E. If more soil erodes, then there will be less trees/plants. Farmed forests do not have the developed root system to prevent this. Erosion leads to less land for plants/trees to grow on, which means the forest will be using up less carbon dioxide (and therefore less beneficial to the environment). F. Plants dying can cause other animals to die as well. Because all the ecosystems on earth are inter-related, this can have adverse effects on life everywhere, and further climate change. 2. I don't think you understood me, so here I go: A. Non-developed nations (which contribute more to climate change than developed ones) do not have tree-farming industries, if they need paper, they are going to chop down forests. B. These countries tend not to replant the forests, and if they do not recycle, they will simply cut down more and more. C. Recycling is the key to protecting these developed native forests. These forests also have great amounts of plant life that will be lost if the trees are cut down. The loss of all these plants/trees is bad for the environment, and this clear-cutting will create a sort of desert, one where erosion occurs, and it becomes even more difficult to replant. Continuation of 2. : Ah yes, a poor country genetically-engineering its crops. That's honestly not going to happen, although it would certainly be a good thing. And even if it did, progress would be too slow. I never said that commercial forests do nothing for the environment, simply that established forests do more, and you have not been able to refute this. You say that these forests stand in the way of growth? Than where will these countries plant these commercial forests, if they have not the room for national ones? My entire point is that recycling could preserve these forests, and you haven't proven that this isn't true. You just say that it will happen anyway, but if these countries recycle, they will not need to cut down these old forests. With a little bit of replanting, and a lot of recycling, these important forests can be saved. 3. Recycling is cheaper than manufacturing A. Recycling is simply cheaper than manufacturing. Commercial forests require massive amounts of fertilizer and water. This costs a great deal of money, as well, these commercial forests must have their wood transported as well, and then processed. B. [What you say the recycling process is: Recycling is a manufacturing process: Trucks have to come by, pick up the paper, treat it with chemicals, and repackage it] Indeed, the paper must be picked up, treated, and repackaged. Yet the same steps apply to new paper, the wood must be picked up, treated, and packaged. As well, there are the costs of water, fertilizer, chemicals to kill weeds, etc. In other words, recycling is the cheaper process. C. As I said earlier, poorer countries will pick the cheaper process, which is recycling. You say in your refutation that poor countries would want to develop industries, but you fail to recognize that recycling IS an industry. And it would be cheaper for the country to establish a recycling industry than a commercial tree growing one, especially since these countries are already very crowded, they need all the efficiency they can get. D. Also in your refutation, you say that commercial trees use up more carbon dioxide. I have already refuted this, but I shall again. When cut down, the capacity for these commercial trees to convert carbon dioxide into oxygen is reduced. That means that for a substantial part of the year they will have limited use in regulating carbon dioxide. As well, you claim that they will use up more carbon dioxide as they are growing, but you fail to recognize that old forests are constantly growing as well. E. (applies to D.) Recycling as I've said, will increase efficiency and preserve old, important forests. Most of these countries don't have room for giant tree farms, and recycling is a must, or we'll see the end of the massive forests which truly regulate carbon dioxide. Final: First of all, there's no reason to be rude. And let me say that it's been a good intelligent debate, better than what I see on most sites. Now onto my points, what I was saying previously was that you were not really calculating the costs of not recycling in other countries, particularly those without commercial tree farming. And as I've already explained, it really isn't that hard for countries to recycle (it's far less demanding than most regualtions placed), recycling IS cheaper than growing new trees. That's what will count in poor countries, the lower cost. Finally, I included the voting thing because I'm a policy debater, and it's kind of a habit (in my state there's some damn lazy judges, you've got to do their thinking for them). And honestly, I'm not following any sort of pious superstition, I'm looking at reality, I'm looking at the facts.

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

    After World War II, there was a huge surge in recorded...

    Man-Made Global Warming Isn't Real

    The planet's average surface temperature has risen about 1.62 degrees Fahrenheit (0.9 degrees Celsius) since the late 19th century, a change driven largely by increased carbon dioxide and other human-made emissions into the atmosphere. Most of the warming occurred in the past 35 years, with the five warmest years on record taking place since 2010. = 1. The 0.7 - 0.9"C increase in the average global temperature over the last hundred years is entirely consistent with well-established, long-term, natural climate trends. 2. The slight increase in temperature which has been observed since 1900 is entirely consistent with well-established, long-term natural climate cycles 3. It is claimed the average global temperature increased at a dangerously fast rate in the 20th century but the recent rate of average global temperature rise has been between 1 and 2 degrees C per century - within natural rates The Greenland and Antarctic ice sheets have decreased in mass. Data from NASA's Gravity Recovery and Climate Experiment show Greenland lost and average of 281 billion tons of ice per year between 1993 and 2016, while Antarctica lost about 119 billion tons during the same time period. The rate of Antarctica ice mass loss has tripled in the last decade./Glaciers are retreating almost everywhere around the world " including in the Alps, Himalayas, Andes, Rockies, Alaska and Africa. 1. It is myth that receding glaciers are proof of global warming as glaciers have been receding and growing cyclically for many centuries. 2. It is a falsehood that the earth"s poles are warming because that is natural variation and while the western Arctic may be getting somewhat warmer we also see that the Eastern Arctic and Greenland are getting colder. 3. Research goes strongly against claims that CO2-induced global warming would cause catastrophic disintegration of the Greenland and Antarctic Ice Sheets. 4. It is a falsehood that the earth"s poles are warming because that is natural variation and while the western Arctic may be getting somewhat warmer we also see that the Eastern Arctic and Greenland are getting colder Satellite observations reveal that the amount of spring snow cover in the Northern Hemisphere has decreased over the past five decades and that the snow is melting earlier. 1. There is strong evidence from solar studies which suggests that the Earth"s current temperature stasis will be followed by climatic cooling over the next few decades Global sea level rose about 8 inches in the last century. The rate in the last two decades, however, is nearly double that of the last century. 1. Politicians and activists claim rising sea levels are a direct cause of global warming but sea levels rates have been increasing steadily since the last ice age 10,000 ago. The number of record high temperature events in the United States has been increasing, while the number of record low temperature events has been decreasing, since 1950. 1. Warmer periods of the Earth"s history came around 800 years before rises in CO2 levels. 2. Throughout the Earth"s history, temperatures have often been warmer than now and CO2 levels have often been higher - more than ten times as high. 3. Significant changes in climate have continually occurred throughout geologic time. The Greenland and Antarctic ice sheets have decreased in mass. Data from NASA's Gravity Recovery and Climate Experiment show Greenland lost and average of 281 billion tons of ice per year between 1993 and 2016, while Antarctica lost about 119 billion tons during the same time period. The rate of Antarctica ice mass loss has tripled in the last decade. 1. I already refuted this before. Each of the last three decades has been successively warmer at the Earth"s surface than any preceding decade since 1850 1. Already refuted this 2. After World War II, there was a huge surge in recorded CO2 emissions but global temperatures fell for four decades after 1940. "It is 'extremely likely that more than half of the observed increase in global average surface temperature' from 1951 to 2010 was caused by human activity. By 'extremely likely', it meant that there was between a 95% and 100% probability that more than half of modern warming was due to humans. - Intergovernmental Panel on Climate Change"s (IPCC) fifth assessment report. 1. There is "no real scientific proof" that the current warming is caused by the rise of greenhouse gases from man"s activity. 2. Man-made carbon dioxide emissions throughout human history constitute less than 0.00022 percent of the total naturally emitted from the mantle of the earth during geological history. 3. Most of global warming is completely natural. 4. A large body of scientific research suggests that the sun is responsible for the greater share of climate change during the past hundred years. "Between 93% to 123% of observed 1951-2010 warming was due to human activities." - US Fourth National Climate Assessment 1. A large body of scientific research suggests that the sun is responsible for the greater share of climate change during the past hundred years. "Scientists Agree: Global Warming is Happening and Humans are the Primary Cause" - UCSUSA 1. The IPCC theory is driven by just 60 scientists and favorable reviewers not the 4,000 usually cited. 2. Leaked e-mails from British climate scientists - in a scandal known as "Climate-gate" - suggest that that has been manipulated to exaggerate global warming 3. A petition by scientists trying to tell the world that the political and media portrayal of global warming is false was put forward in the Heidelberg Appeal in 1992. Today, more than 4,000 signatories, including 72 Nobel Prize winners, from 106 countries have signed it. 4. A large body of scientific research suggests that the sun is responsible for the greater share of climate change during the past hundred years. Human influence on the climate system is clear, and recent anthropogenic emissions of green-house gases are the highest in history. ["] Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia." - IPCC AR5 1. There is "no real scientific proof" that the current warming is caused by the rise of greenhouse gases from man"s activity. 2. Man-made carbon dioxide emissions throughout human history constitute less than 0.00022 percent of the total naturally emitted from the mantle of the earth during geological history. 3. After World War II, there was a huge surge in recorded CO2 emissions but global temperatures fell for four decades after 1940. 4. Warmer periods of the Earth"s history came around 800 years before rises in CO2 levels. 5. Despite activist concerns over CO2 levels, CO2 is a minor greenhouse gas, unlike water vapor which is tied to climate concerns, and which we can"t even pretend to control Of all the radiative forcings analysed, only increases in greenhouse gas emissions produce the magnitude of warming experienced over the past 150 years." - Berkeley Earth 1. There is "no real scientific proof" that the current warming is caused by the rise of greenhouse gases from man"s activity. 2. After World War II, there was a huge surge in recorded CO2 emissions but global temperatures fell for four decades after 1940. 3. Despite activist concerns over CO2 levels, CO2 is a minor greenhouse gas, unlike water vapour which is tied to climate concerns, and which we can"t even pretend to control Today, CO2 levels are 40 percent higher than they were before the Industrial Revolution began; they have risen from 280 parts per million in the 18th century to over 400 ppm in 2015 and are on track to reach 410 ppm this spring. In addition, there is much more methane (a greenhouse gas 84 times more potent than CO2 in the short term) in the atmosphere than at any time in the past 800,000 years"two and a half times as much as before the Industrial Revolution. While some methane is emitted naturally from wetlands, sediments, volcanoes and wildfires, the majority of methane emissions come from oil and gas production, livestock farming and landfills." - Earth Institute, Columbia University 1. There is "no real scientific proof" that the current warming is caused by the rise of greenhouse gases from man"s activity. 2. Man-made carbon dioxide emissions throughout human history constitute less than 0.00022 percent of the total naturally emitted from the mantle of the earth during geological history. 3. Warmer periods of the Earth"s history came around 800 years before rises in CO2 levels. 4. After World War II, there was a huge surge in recorded CO2 emissions but global temperatures fell for four decades after 1940. Today, almost 100 percent [plus or minus 20 percent] of the unusual warmth that we"ve experienced in the last decade is due to greenhouse gas emissions," - Peter de Menocal, dean of science at Columbia University and founding director of Columbia"s Center for Climate and Life 1. There is "no real scientific proof" that the current warming is caused by the rise of greenhouse gases from man"s activity. 2. Despite activist concerns over CO2 levels, CO2 is a minor greenhouse gas, unlike water vapor which is tied to climate concerns, and which we can"t even pretend to control If the sun were brighter, we would see warming all the way up through the atmosphere from the surface to the stratosphere to the mesosphere. We don"t see this. We see instead warming at the surface, cooling in the stratosphere, cooling in the mesosphere. And that"s a signature of greenhouse gas forcing, it"s not a signature of solar forcing. So we know it"s not solar." - Gavin Schmidt, director of National Aeronautics and Space Administration"s Goddard Institute for Space Studies 1. A large body of scientific research suggests that the sun is responsible for the greater share of climate change during the past hundred years. Rest in comments section.

    • https://www.debate.org/debates/Man-Made-Global-Warming-Isnt-Real/1/
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    My opponent appears to think that whether the IPCC is a...

    The climate is not "a changing".

    I have clearly stated that the IPCC is a communist organisation to which my opponent has not offered any counter argument. Thus, We can only assume that my opponent agrees with this statement thus far. My opponent appears to think that whether the IPCC is a communist organisation or not is relevant to the debate. My opponent should note that when participating in a debate all the items in the first round should be addressed. It is up to the judges of the debate to decide if any part of the debate is irrelevant and it is not part of con's duty or responsibility to decide what is relevant and what is not relevant. This is because the IPCC is an untrustworthy organisation which has political agendas which have nothing to do with climate. Thus, If they are using climate as a tool of political manipulation then, This should be addressed as important evidence. Just because my opponent can't see any structure in my first round doesn't imply that there is no structure. Of course, It would be of great advantage to my opponent if he could eliminate the IPCC from the debate because the IPCC has a very bad record of corruption and supplying misinformation about the My opponent appears to think that whether the IPCC is a communist organisation or not is relevant to the debate. My opponent should note that when participating in a debate all the items in the first round should be addressed. It is up to the judges of the debate to decide if any part of the debate is irrelevant and it is not part of con's duty or responsibility to decide what is relevant and what is not relevant. This is because the IPCC is an untrustworthy organisation which has political agendas which have nothing to do with climate. Thus, If they are using climate as a tool of political manipulation then, This should be addressed as important evidence. Just because my opponent can't see any structure in my first round doesn't imply that there is no structure. Of course, It would be of great advantage to my opponent if he could eliminate the IPCC from the debate because the IPCC has a very bad record of corruption and supplying misinformation about the climate. Thus, My opponent would very much rather not discuss the IPCC for these very reasons.