Greenpeace celebrates 8.74 Million species on planet Earth, but only humans annually absorb 42 percent of the Earth’s terrestrial net primary productivity, 30 percent of its marine net primary productivity, and 50 percent of its fresh water. Forty percent of the planet’s land is devoted to human food production, up from 7 percent in 1700. Fifty percent of the planet’s land mass has been transformed for human use. More atmospheric nitrogen is now fixed by humans than all other natural processes combined. biologicaldiversity.org/programs/population_and_sustainability/extinction/
Posted on: Thu, 22 May 2014 21:53:46 +0000
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