Satellite data track carbon dioxide in forests. (News Link).

NASA-funded researchers, using high-resolution maps of carbon storage derived from NASA-developed satellite datasets, suggest that forests in the United States, Europe and Russia have been storing almost 700 million metric tons of carbon per year during the 1980s and 1990s.

Scientists hope to understand how much carbon is stored in Earth's forests to account for the fate of the carbon released into Earth's atmosphere in the form of carbon dioxide from fossil-fuel combustion. NASA's research will further understanding of the role that such "sinks" play in sequestering ca