Human activity now dominates 43 percent of Earth’s land surface and affects twice that area. One-third of all available fresh water is diverted to human use. A full 20 percent of Earth’s net terrestrial primary production, the sheer volume of life produced on land every year, is harvested for human purposes. Extinction rates compare to those recorded during the demise of dinosaurs and average temperatures will likely be higher in 2070 than at any point in human evolution. grist.org/climate-energy/were-about-to-push-the-earth-over-the-brink-new-study-finds/
Posted on: Sat, 08 Feb 2014 15:26:59 +0000
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