American Geophysical Union

Groundwater depletion rate accelerating worldwide

In recent decades, the rate at which humans worldwide are pumping dry the vast underground stores of water that billions depend on has more than doubled, say scientists who have conducted an unusual, global ...

Sep 23, 2010
4.4 / 5 (25) 9 | with audio podcast

Elevated carbon dioxide making arid regions greener

Scientists have long suspected that a flourishing of green foliage around the globe, observed since the early 1980s in satellite data, springs at least in part from the increasing concentration of carbon dioxide in Earth's ...

May 31, 2013
4.9 / 5 (17) 6