I’ve been meaning to write about friend and colleague Sanjoy Som’s paper for over a week now. I’m finally getting around to it this evening. I submit to you that this paper is both unbelievably cool in the “I didn’t know that was possible” sort of way yet also very important in the “we really needed that dataset” sort of way.
First, the cool. Check out the title: “Air density 2.7 billion years ago limited to less than twice modern levels by fossil raindrop imprints.” What the authors are telling us is that ~2,700,000,000 years ago it rained in what