Our Depleting Phosphorus ReservesThe June issue of Scientific American has an article about coming shortages of phosphorus, a mineral vital for agriculture. Major changes in the ways in which we conduct agriculture and recycle waste are urgently called for. The author, David A. Vaccari is Director of the Department of Civil, Environmental, and Ocean Engineering at the Stevens Institute of Technology.
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Peak Oil
For the last 30 years, geologists have been finding fewer and fewer oil fields. Now oil production has also begun falling. Greens believe it's time to make the switch to renewables. Click here for a primer on Peak Oil. Global Warming
James Hansen, the NASA physicist whom Bush tried to silence, predicts we are nearing a global warming "tipping point." Click here for a primer on global warming. Nuclear Power
Greens have opposed nuclear power from the very first. They have opposed nuclear power as inherently dangerous. Greens have also objected to the massive subsidies needed to build and operate nuclear power plants. Click here for a primer on nuclear power. |
