Researchers have redetermined the gravitational constant G, which determines the strength of gravity, using a measurement technique that relies on lasers.
The rainforests of Central Africa have lower biodiversity than very similar ecosystems in South America and Asia. New research might have the reason why.
With a high rate of melting of glaciers in the Arctic, Pamir, Hindu Kush and Himalayas, the melt-waters pose a grim situation for the downhill population.
New study published in Science shows climate change - not water and land management - plays a crucial role in river and stream changes at a global level.