The path of 14C from cosmic rays to cellulose. Green arrows denote newer pools of 14C and brown arrows denote older pools. The size of the arrow reflects best estimates of size of the carbon pool.

An experiment in western China over the past four decades shows that it is possible to tame the expansion of desert lands with greenery, and, in the process, pull excess carbon dioxide out of the sky.

There are facts you learn in school, and then there are facts that never make it anywhere near a classroom. From a ...

Life in the ocean runs on light. It fuels photosynthesis, shapes food webs and determines where many marine species can live.