Tipping Points: Environmental Trends to Destroy or Save Civilization

With civilization standing at multiple self-generated tipping points, a renowned environmentalist outlines 10 environmental trends of grave concern and 10 trends that give us reason for hope.

Concentrated solar power
In a concentrated solar power system, curved mirrors focus sunlight. The heat energy is then converted into electricity. Some experts predict that nearly half of Europe’s electric supply could be produced from solar thermal power plants in North Africa. 
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