For decades, scientists believed Antarctica’s first large ice sheet formed around 34 million years ago during the Eocene-Oligocene transition. This cooling event transformed the continent into ...

More than two-thirds of mammals in Africa and the Arabian Peninsula went extinct during the Eocene-Oligocene transition some 30 million years ago, a study finds. Chloe Tenn is a graduate of North ...

Their findings were published in Earth-Science Reviews. The Eocene-Oligocene transition marked a significant climate change from a warm "hothouse" state to a cooler "icehouse" period, with the ...