What are some facts that support the theory that Global Warming is caused by humans?

None have yet been presented. There are some moderate correlations between CO2 emission increases and temperature increases, but as history further back shows, correlation is not causation. No evidence has been offered demonstrating a solid link between so-called greenhouse gas emissions by human civilization and warming in the Earth's atmosphere.

There are none. At least not honest answers. There is a political agenda behind the AGW propaganda, and they have paid handsomely for "research" that supports only their position, so no honest proof has yet been developed. Many an environmental group has major donors and support from the owners of big oil. The way the 501C3 nonprofits are formed are often to the benefit of billionaires like the Rockefellers. And they have profitted handsomely from their charitable donations. Look at the board members of those charities, Most of those running the big ones came from Wall street- and they are not there over a change in heart. Seriously- Your climate changes you are seeing today are actually caused by the sun. The sun has the ability to shift the Earths climate in a very short period of time. If the sun were to go dark so no light or heat was emitted, the earth would be about the same temp as deep space in the matter of a few hours. The earth has also had higher concentrations of carbon dioxide- perhaps 100 times todays concentration, and at the time, the earth was much closer to the sun than it is now. You would die in the primordial atmosphere, yet here we are today. Blame the blue green algae. Bottom line is look at who is profitting from the agenda of AGW, carbon trading cap and trades, carbon taxation- it is the banks- the same people who collapsed the US economy. You trust them to be honest? Would you buy a used car from Al Gore?

The basics are in this article from ScientificAmerican. http://www.laucksfoundation.org/pdfs/sciam_collins.pdf There are others at www.skepticalscience.com Stick to science sources and ignore stupid stuff like it's caused by the sun. While some researchers believe there has been a correlation between solar activity and climate in the past, over the past 30 years our temperature has accelerated while the sun has not become more active or increased irradiance. A lot of people will give you answers even though they don't know what they are talking about.

Fact: Satellite measurements show that the energy trapped near the surface of the planet is increasing. As the planet retains more energy it warms, as does every object with such an energy imbalance. This is specifically due to an increasing greenhouse effect, which is why the stratosphere, mesosphere and lower thermosphere are cooling, because more energy is being trapped nearer the surface. Fact: Those same satellites measurements show specifically what types of gases are responsible for the increased energy retention. Greenhouse gases absorb energy at specific wavelengths. CO2 absorbs energy at 15 micrometers, at the curve, and greatest output, of the planets blackbody emission spectrum. This band also shows the greatest change in outbound radiation and the greatest increase in downward radiation. Fact: The makeup of the atmosphere consists of different types of carbon dioxide. Naturally occurring carbon-12. or carbon with 12 isotopes, makes up the majority of atmospheric carbon while carbon-13 and carbon-14 make up the majority of the rest. When plants take in carbon they have a bias for the lighter carbon-12 isotope. The ratio of carbon makeup of plants is different than the ratio in the atmosphere. As we burn more fossil fuels we would expect the atmospheric ratio to change because, as fossil fuels are made of ancient plants, the ratio of different isotopes are different in human emissions than that of the atmosphere. And this is exactly what we see occurring. Though natural emissions of carbon far outstrip human emissions, there is a balance between planetary output and planetary absorption of this gas. Currently the atmosphere is increasing by roughly 2ppm, or parts per million, per year which is equal to between 15gt, or gigatonnes, and 16 gt per added CO2. Human emissions account for 30gt of CO2. Human emissions are greater than the annual atmospheric increase. The rate at which carbon sinks absorb atmospheric carbon is also increased which is why the ocean pH level is falling. If you'll notice I provided you with scientific evidence, which is readily accessible from science journals freely available online. The deniers spout their retoric concerning conspiracy theories, where the money is going, carbon trading, etc.. I find it funny that they talk about trading carbon credits when the largest trading is done by the fossil fuel industry. If they say 'follow the money' and look towards carbon credits they are completely glossing over the money behind big oil.

Fact # 1, I just farted so I'm guilty of "climate change". Oh and that's because I ate meat and gave some to my dog. According to you warmers, a dog contributes more CO2 than an SUV. "Gore leaves car idling for one hour during speech; Opts for Swedish government jet over public transportation " http://www.climatedepot.com/a/8595/Gore-%E2%80%A6 Recently, Nobel Peace Prize winner Al Gore toured again. Or maybe he does that all the time. This time, he turned up in Gothenburg (Sweden) for the usual alarmist talk. In advance, all distinguished guests were politely advised to – if possible – use any form of public transportation to go to the event, in order to minimize CO2 emissions. Intriguingly, the Master of World Climate himself arrived in a rental car (with or without driver is unclear), from the airport, and subsequently left the engine running for the entire lecture. That is to say, about one hour. Incidentally, local legislation prohibits – for very good environmental reasons, i e pollution – any car engine running on empty for more than 60 seconds. Fines are severe. As far as I know, he was not fined.

There are no fact that support the theory that global warming is caused by humans. A lot of people try to claim that natural events are caused by humans but there is no proof. Like sea level rise. It's been rising since the end of the last ice agw 12000 years ago. It's not a new event. Some claim that natural disasters have increased but if you look at the real numbers there has been no increase in natural disasters. Only an increase in the damage because we are building more in area prone to natural disasters. Some claim the ice caps are melting but that again is a trend that started 12000 years ago and is nothing new.

>>>According to you warmers, a dog contributes more CO2 than an SUV. I don't know what I'm bothering with such a pathetic claim. Nobody has ever mentioned dogs here, as far as I have ever seen up until now - most commonly the only animals brought up are those with ruminant digestive systems, because their digestive systems release methane which has a considerably higher GWP than CO2 does. Also, due to domestication and mass raising of ruminants like cows, there is a considerably higher population of cows than dogs. SUVs on the other hand emit about 195 gCO2/km driven (UK average) http://www.carpages.co.uk/co2/ Assuming we can roughly extrapolate this for the US, and also using average miles driven per year per car from 2006 in the US (~12.5 thousand miles/year, = 20,117 kilometers/year): http://www.project.org/info.php?recordID=146 we get about 55 kilometers per day, or 10.75 kilograms of CO2 per day. Since air inhaled is about 4% CO2 compared to 0.04% inhaled (by volume; 5.76% net by weight), the average dog takes 18-34 breaths per minute at rest, and the average dog's lung capacity can be estimated to be about 2 liters of air. http://en.wikibooks.org/wiki/GCSE_Science/Breathing_and_Respiration http://vetmedicine.about.com/od/diseasesconditionsfaqs/tp/TP_dogfacts.htm that means that the average dog produces somewhere between 3.58 kg CO2/day and 6.77 kg CO2/day. Time for 2nd grade math: which emits more kiddies? Something that emits 10.75 kg/day or something that emits 3.58-6.77 kg/day? (Obviously this should only be taken as a rough estimate, since we're assuming that the number of breaths a dog takes in a given day can be extrapolated from the number of breaths per minute at rest, and that the air exhaled by a dog is roughly the same in concentration as a human's.)

There are many. We've observed an increase in the greenhouse effect. We can determine approximately how much warming this causes through physics. The upper atmosphere is cooling because more heat is trapped in the lower atmosphere. The planet is warming more at night than during the day because greenhouse gases continue to trap heat even when the sun is down. See the links below for more details and examples.

Global warming is totally man made. It exist only in man made computer models. Turn of the computers and cut the funding and the problem will go away intently. Just look at how the numbers have been fudged by man. http://www.appinsys.com/globalwarming/GW_Summary.htm http://stevengoddard.wordpress.com/2010/09/25/thermometer-magic/ http://www.suite101.com/content/royal-society-humiliated-by-global-warming-basic-math-error-a296746 It's not nature faking the temperature numbers, its man so AGW must be man made.