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Science, Tech & Environment

Deforestation Nations

Cutting down trees releases CO2 and reduces the amount of CO2 absorbed from the air every year. Now, the regional leaders of some tropical and industrialized countries are finding common ground on ways to curb climate change. Living on Earth 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.

Science, Tech & Environment

Deforestation Nations

Cutting down trees releases CO2 and reduces the amount of CO2 absorbed from the air every year. Now, the regional leaders of some tropical and industrialized countries are finding common ground on ways to curb climate change. Living on Earth 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.