New research shows how early farmers adapted to a well-documented climate shift 8,200 years ago. The results demonstrate the value of using lipid biomarkers to explore ancient societies’ responses to climate change.
Federal plans to complete a continuous wall along the U.S.-Mexico boundary would threaten the existence of numerous plant and animal species. Stanford’s Paul Ehrlich and Rodolfo Dirzo look at the region’s unique natural ecosystems, and what they have to lose.
Different species almost always coexist – whether it’s big animals on the plains, bugs in a jungle or yeasts in flower nectar – but how that works is complicated. Now, Stanford researchers have teased apart competing theories of how species live together.
Geologists assume when they find molecules called sterols in soils or rocks they indicate the presence of plants, animals or fungi in ancient environments. But discovering how some bacteria also produce and modify sterols could change those interpretations.