| 22-12-2015 23:48 | |
| Tai Hai Chen★★★★☆ (1085) |
jdm wrote: At the peak of the Pliocene some 4 million years ago, CO2 reached 415 ppm because of very high temperature. Next year CO2 level 404 ppm. https://scripps.ucsd.edu/programs/keelingcurve/2013/12/03/what-does-400-ppm-look-like/ |
| Threads | Replies | Last post |
| Nitrate Reduction - Powerful Greenhouse Gas Emission AND Alkalinity | 112 | 07-04-2025 19:09 |
| The SCIENCE of the "Greenhouse Effect" | 314 | 19-01-2025 05:49 |
| Greenhouse gasses | 83 | 18-07-2024 21:32 |
| The "radiative Greenhouse effect" does not exist | 145 | 24-04-2024 02:48 |
| 'Greenhouse' Effect? | 49 | 30-11-2023 06:45 |