Columbia University

The Dead Sea—depletion of a shared natural resource

Travel to Jordan raised a lot of expectations, including that I would find a land somewhat familiar to my birthplace, Ashgabat, Turkmenistan—perhaps because of the Muslim majority of both places and the hot weather that ...

dateJun 24, 2016 in Ecology
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Seeking humanity's roots

Who were our earliest ancestors? How and when did they evolve into modern humans? And how do we define "human," anyway? Was it when some long-ago ancestor stood and walked; grew a brain of a certain size; or figured out how ...

dateJun 09, 2016 in Archaeology & Fossils
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Walking in the shadow of a great volcano

On a ledge just inside the lip of Chile's Quizapu volcanic crater, Philipp Ruprecht was furiously digging a trench. Here at an elevation of 10,000 feet, a 1,000-foot plunge loomed just yards away, and wind was whipping ...

dateMay 18, 2016 in Earth Sciences
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