Most Shared Stories Tagged: environment

Science, Tech & Environment

Probing Lake Baikal

Host Marco Werman gets the latest on a manned submarine expedition to the bottom of Russia's Lake Baikal, the deepest freshwater lake in the world, and Marco also speaks with Peter Thomson, who visited Lake Baikal to write a book about the place.

Science, Tech & Environment

Sahara cemetery

American archaeologists working in the Sahara Desert say they've discovered extensive burial grounds dating back thousands of years, at a time when the Sahara was a green and fertile land. The World's David Leveille reports.

Science, Tech & Environment

Geo answer

We were looking for a tributary of the Amazon that starts in the Brazilian state of Mato Grosso. The answer is the Xingu River. Researchers working near the source of the river have un-covered traces of ancient settlements -- known as "lost cities" -- buried under a thick layer of jungle. Lisa Mullins speaks with Michael Heckenberger, a professor of Anthropology at the University of Florida who led an expedition to the region.