Browsing Tag
sediment cores
2 posts
How Fire, Not Spears, Wiped Out America’s Giants
Researchers at the La Brea Tar Pits discovered that a combination of climate change and massive, human-sparked wildfires—not just hunting—led to the extinction of North America’s megafauna.
Ancient leaf waxes reveal a wetter African past than dust records suggested
New evidence from ancient leaf waxes reveals that northern African summer rainfall remained stable even as the world plunged into an ice age, challenging a long-held view of the continent's climate history.