"The Nitrogen Fix: Breaking a Costly Addiction"

"Over the last century, the intensive use of chemical fertilizers has saturated the Earth’s soils, waters, and atmosphere with nitrogen. Now scientists are warning that we must move quickly to revolutionize agricultural systems and greatly reduce the amount of nitrogen we put into the planet's ecosystems."

Fred Pearce reports for Yale Environment 360 November 5, 2009.

Friday, November 6, 2009