Left alone, natural systems keep nitrogen, carbon, and other key ingredients of life balanced.
NOVEMBER 19, 2012 YES MAGAZINE
Nitrogen is the most common element in the atmosphere. Plants can’t grow without it. Carbon is essential to life: 18 percent of a human body and 50 percent of a tree is carbon. Left alone, natural systems maintain cycles that keep these elements circulating where they’re needed and in the right amounts.
But we’ve pulled nitrogen out of the air to feed plants and put carbon, from burning coal and oil, into the air. We’ve thrown natural cycles out of balance. Excess carbon is heating the planet. Excess nitrogen is poisoning the air and water. In order to have the clean water, healthy ecosystems, and stable climate we need to survive, we’ll have to stop overloading the systems... http://www.yesmagazine.org/issues/what-would-nature-do/just-the-facts?utm_source=november12&utm_medium=email&utm_campaign=titleTo/%20Save%20Our%20Ecosystems,%20Stop%20Overloading%20Them