Between 11,000 and 5,000 years ago, a wobble in Earth’s orbit turned the Sahara into a lusher environment than it is today. It was the African Humid Period, during which ancient humans painted ...

Ubari, Libya is a surreal desert oasis where color-changing lakes shimmer amid Saharan dunes. Salt-rich, ancient, and ...

Dust from the Sahara Desert, once a massive lake, travels across the Atlantic Ocean. This dust, rich in potassium and iron from dead diatoms, fertilizes the Amazon rainforest. The Amazon River then ...