Columbia University

Warming climate is deepening California drought

A new study says that global warming has measurably worsened the ongoing California drought. While scientists largely agree that natural weather variations have caused a lack of rain, an emerging consensus says that rising ...

dateAug 20, 2015 in Environment
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The downs and ups of mountain building

In the D'Entrecasteaux Islands off Papua New Guinea, the rocks are giving rise to new ideas about the ways in which mountain chains form. A new scientific model inspired by data from the islands shows how the seemingly opposite ...

dateAug 20, 2015 in Earth Sciences
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Mapping land claimed by sea level rise

The New Jersey shoreline that sea birds wandered during the last ice age is about 90 miles east of today's beaches, tens of meters beneath the sea floor. As the ice melted, sea level gradually rose and flooded the coastal ...

dateAug 20, 2015 in Earth Sciences
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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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