Columbia University

When the world ended in ice

(Phys.org) -- A mile or so of glacial ice covering much of North America and plowing down from the north once terminated in the New York metropolitan area, at a front stretching roughly from exit ...

Jul 03, 2012
5 / 5 (3) 4

Pumping draws arsenic toward a big-city aquifer

Naturally occurring arsenic pollutes wells across the world, especially in south and southeast Asia, where an estimated 100 million people are exposed to levels that can cause heart, liver and kidney problems, ...

Sep 11, 2013
3.8 / 5 (4) 0 | with audio podcast

Engineering professor works to speed up internet

Keren Bergman gets as aggravated as anyone by how long it takes to email a video of her son's recital to her parents. Unlike most people, Bergman, a professor of electrical engineering and department chair ...

Feb 24, 2011
2.3 / 5 (6) 5