Joined: Oct. 2005
Inspired by that numbnut who said CO2 doesn't trap heat, which has been known to be wrong since 1896, I wondered what the temp of Earth would be without greenhouse gases. This is interesting:
| At present, roughly 30% of the incoming solar radiation is reflected back to space by the clouds, aerosols, and the surface of Earth. Without naturally occurring greenhouse gases, Earth's average temperature would be near 0°F (or -18°C) instead of the much warmer 59°F (15°C).|
NASA: Refining the role of greenhouse gases.