Columbia University

Engineering ways to turn waste into energy

(PhysOrg.com) -- In recent years, Nickolas Themelis has devoted his career to the management of household trash -- a fitting occupation for a professor originally from Athens, where the ancient Greeks created the first municipal ...

dateNov 23, 2010 in Engineering
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Some Antarctic ice is forming from bottom

Scientists working in the remotest part of Antarctica have discovered that liquid water locked deep under the continent's coat of ice regularly thaws and refreezes to the bottom, creating as much as half the thickness of ...

dateMar 03, 2011 in Earth Sciences
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Drilling for insights under the salty dead sea

(PhysOrg.com) -- Scientists are drilling deep into the bed of the fast-shrinking Dead Sea, searching for clues to past climate changes and other events that may have affected human history even earlier than biblical times. ...

dateJan 31, 2011 in Earth Sciences
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