Columbia University

Volcanoes have shifted Asian rainfall

Scientists have long known that large volcanic explosions can affect the weather by spewing particles that block solar energy and cool the air. Some suspect that extended "volcanic winters" from gigantic blowups ...

Nov 03, 2010
4.9 / 5 (8) 16 | with audio podcast

A natural wonder rediscovered

(PhysOrg.com) -- Scientists using underwater sensors to explore Lake Rotomahana in New Zealand have uncovered remnants of the Pink Terraces,” once considered the eighth natural wonder of the world.

Feb 23, 2011
5 / 5 (7) 0

Ocean currents speed melting of Antarctic ice

Stronger ocean currents beneath West Antarctica's Pine Island Glacier Ice Shelf are eroding the ice from below, speeding the melting of the glacier as a whole, according to a new study in Nature Geoscience. A grow ...

Jun 26, 2011
3.9 / 5 (9) 24 | with audio podcast

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 ...

Mar 03, 2011
4.9 / 5 (7) 2 | with audio podcast