In this eye-opening talk, fish paleobiologist Lauren Sallan explains how one of Earth’s most devastating mass extinctions ...

For years, river restoration has followed a familiar script. Remove barriers where possible, reconnect fragmented waterways ...

Editor's note: All opinions, columns and letters reflect the views of the individual writer and not necessarily those of the IDS or its staffers. We’ve all seen this poster in our middle school ...

Humans really do rule the world. We took over fast and far, more than any other wild vertebrates. We inhabit nearly every corner of the world, and can thrive in deserts, tropical rainforests and even ...

How did humans become human? Understanding when, where and in what environmental conditions our early ancestors lived is central to solving the puzzle of human evolution. Unfortunately, pinning down a ...