Columbia University

Researchers use stars to infer mass of Milky Way

What if your doctor told you that your weight is somewhere between 100 and 400 lbs.? With any ordinary scale every patient can do better at home. Yet, one patient can't: the Milky Way. Even though today we peer deeper into ...

dateJun 02, 2015 in Astronomy
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Oldest-known stone tools pre-date Homo

Scientists working in the desert badlands of northwestern Kenya have found stone tools dating back 3.3 million years, long before the advent of modern humans, and by far the oldest such artifacts yet discovered. The tools, ...

dateMay 20, 2015 in Archaeology & Fossils
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Unforeseen dangers in a global food system

New York City Mayor Bill de Blasio's claim during a recent blizzard that food delivery bikes were not emergency vehicles caused a small disruption in the City's normally fast, abundant and inexpensive access to nearly any ...

dateMay 01, 2015 in Environment
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Ecologist tracks tick-borne diseases beyond their usual borders

As spring blooms, people in the Northeast and Midwest look forward to spending more time outdoors—which also means plotting ways to avoid the disease carrying black-legged deer tick. This year new research shows that people ...

dateMar 27, 2015 in
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Science nabs illegal ivory sellers

A Toronto-based company has been convicted of selling illegal ivory in the first case to use a technique for dating ivory developed by a scientist at the Lamont-Doherty Earth Observatory in collaboration with other colleagues.

dateMar 09, 2015 in Analytical Chemistry
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Did climate change help spark the Syrian war?

A new study says a record drought that ravaged Syria in 2006-2010 was likely stoked by ongoing manmade climate change, and that the drought may have helped propel the 2011 Syrian uprising. Researchers say the drought, the ...

dateMar 02, 2015 in Environment
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