Green Sahara’s Ancient Rainfall Regime Revealed
What is now the Sahara Desert was the home to hunter-gathers who made their living off the animals and plants that lived in the region’s savannahs and wooded grasslands 5,000 to 11,000 years ago.
How the New Climate Denial Is Like the Old Climate Denial
Some conservatives have introduced uncertainty by suggesting climate change might be driven by “natural” global cycles. But according to Maureen Raymo of Columbia University’s Lamont-Doherty Earth Observatory, we know why climate changes naturally, and non-human activity can’t explain the rapid changes observed in the past century.