A dirty brown haze sometimes more than a mile thick is darkening skies not only over vast areas of Asia, but also in the Middle East, southern Africa and the Amazon Basin, changing weather patterns around the world and threatening health and food supplies, the UN reported Thursday.

Mining company plans to move three glaciers in Chile

Says the eminent Alaskan scientist Maynard Miller. manu n kulkarni visits this land of the midnight sun to know what causes its glaciers to recede and what endangers its rare wildlife

Phytoplankton production could damage oceanic ecosystems

A RECENT find of fossils may help geologists break through the ice obscuring Antarctica's past. David Harwood of the University of Nebraska and his colleagues have collected fossils of marine

Modern practices are threatening to break up an unusual water tapping and water sharing process in Himachal Pradesh. Devised hundreds of years ago, it converted barren land in Spiti into fertile fields.