Billie Bratchett: Global warming is the increase in the average temperature of the Earth's near-surface air and oceans since the mid-twentieth century, and its projected continuation.The average global air temperature near the Earth's surface increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the hundred years ending in 2005.[1] The Intergovernmental Panel on Climate Change (IPCC) concludes "most of the observed increase in globally averaged temperatures since the mid-twentieth century is very likely due to the observed increase in anthropogenic (man-made) greenhouse gas concentrations"[1] via the greenhouse effect. Natural phenomena such as solar variation combined with volcanoes probably had a small warming effect from pre-industrial times to 1950 and a small cooling effect from 1950 onward.[2][3]These basic conclusions have been endorsed by at least thirty scientific societies and academies of science,[4] including all of the national academies of science of the majo! r industrialized countries.[5][6][7] While individual scientists have voiced disagreement with some findings of the IPCC,[8] the overwhelming majority of scientists working on climate change agree with the IPCC's main conclusions.[9][10]Climate model projections summarized by the IPCC indicate that average global surface temperature will likely rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the twenty-first century.[1] The range of values results from the use of differing scenarios of future greenhouse gas emissions as well as models with differing climate sensitivity. Although most studies focus on the period up to 2100, warming and sea level rise are expected to continue for more than a thousand years even if greenhouse gas levels are stabilized. The delay in reaching equilibrium is a result of the large heat capacity of the oceans.[1]Increasing global temperature will cause sea level to rise, and is expected to increase the intensity of extreme weather events and! to change the amount and pattern of precipitation. Other effe! cts of global warming include changes in agricultural yields, trade routes, glacier retreat, species extinctions and increases in the ranges of disease vectors.Remaining scientific uncertainties include the amount of warming expected in the future, and how warming and related changes will vary from region to region around the globe. Most national governments have signed and ratified the Kyoto Protocol aimed at reducing greenhouse gas emissions, but there is ongoing political and public debate worldwide regarding what, if any, action should be taken to reduce or reverse future warming or to adapt to its expected consequences...Show more
Connie Dickirson: The Metrodome collapsed from all that snow...There is no denying that. But consider the following: Snow, as you're probably aware, is a form of precipitation. Precipitation being when cloud particles become too heavy to remain in the air. Snow is a form of water (crystalline water ice) which is made when water vapor de! composes in the high atmosphere at temperatures below freezing (32°F/0°C.) Thus for there to be lots of snowfall there must first be lots of evaporation. According to NASA's scientists (liberals) at the Goddard Institute for Space Studies (GISS) November 2010 was the warmest November on record. So with high temperatures you'd expect lots of evaporation which then leads to... (dramatic pause) "dat da da da" precipitation. Again, according to NASA 2009 was the second hottest year on record and in my area we got slammed with snow last winter....Show more
Ronald Moehr: Watch An Inconsistent Truth and get back with me.
Eva Lichlyter: Global warming IS real because of humans. As soon as we get wiped out, it would reverse.
Joaquin Dronko: global warming is real. its proved
Betsey Copp: The real argument is whether or not it is caused by human beings! The science articles that argue that it's a natural phenomena are abundant.
Lana Uliano: Global warm! ing is real; the question is whether we created it. We are most likely! making it worse and perhaps faster. Most credible scientists say that we are merely at the end of the mini-ice age that the world has been in for many years now. It is logical to assume that when an ice age ends, the globe warms up.
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