Climate Change 101
Since we have the climate change deniers back, let me explain climate change 101 in ways you can check yourself. The science isn't complex, you can understand it directly without all these talking heads, go look for yourself.
1. The sun heats the earth, the earth gives off Infrared radiation as a result, as do most things.
[Think of the police Infrared cameras at night picking out warm things that emit infra-red, think how bright the earth looks during the day through those things]
2. The infrared strikes molecules in the atmosphere, and the chemical bond in the gas resonates, then reemits the heat, again as infra-red, but in all directions, including back down to the earth. Mostly water vapour and CO2 bonds.
[You know how a cloudy night keeps the heat in? That's the water vapour bond resonance bouncing the heat from the earth back.. i.e. you've seen this effect yourself]
3. We're increasing CO2, (and water vapour) by burning petroleum (hydrocarbons) e.g. CH4 + O2 + O2 -> CO2 + 2H2O).
[basic chemistry]
i.e. it's all straight forwards, nothing complex, and the predictions for it are about 3.5 degrees over a century, which is a lot. And it's measured, and recorded from before 1980, as is the shrinking of the icebergs and so on.
http://data.giss.nasa.gov/gistemp/


