April 28, 2010
For most of the 2.5 million years that humans and their predecessors have been around, the Earth has been a volatile place. Subtle shifts in the planet’s orbit have triggered large temperature swings; glaciers have marched across North America and Europe and then retreated. But, about 10,000 years ago, something unusual happened: The Earth’s climate settled into a relatively stable state, global temperatures started hovering within a narrow band, and sea levels stopped rising and falling so drastically.
Can The Sahara Desert Power Europe?
August 25, 2009
What with all that hot sun beating down on the Sahara Desert day after day, it's no surprise that energy planners have suggested lining the sands of North Africa with mirrors and building vast concentrated solar plants to deliver lots and lots of carbon-free power to Europe.