Methane was not the climate savior once imagined for the middle chapter of Earth history
Tuesday, September 27, 2016 - 05:31
in Astronomy & Space
For at least a billion years of the distant past, planet Earth should have been frozen over but wasn't. Scientists thought they knew why, but a new modeling study from the Alternative Earths team of the NASA Astrobiology Institute has fired the lead actor in that long-accepted scenario.