[Cyanobacteria–green, brown, and orange streaks–grow in hot spring at Yellowstone National Park. Photo by Harvey Barrison via Flickr & Creative Commons 2.0] The troublemakers were hardly new to the neighborhood. For 300 million years, they had lived in the water column, floating in the sunlight near the surface, sending tiny plumes of toxic gas into …
The Talk: “Planetary Changes from Deep Time to the 4th Kind” In Plain English: Life doesn’t just adapt to geochemical features; it transforms them simply by…living. The Speaker: Andrew Knoll of Harvard and David Grinspoon of the Planetary Science Institute The Sponsor: Planet and Life Series, sponsored by MIT Earth, Atmospheric, and Planetary Sciences dept. …