Newly evolved finch appears on the Galapagos Islands
November 16, 2009, 9:40 p.m. by Bryan Nelson
Evolution caught in the act? An isolated population of finches have odd-shaped beaks, sing differently, and don't breed with others.
How is the Three Gorges Dam impacting the environment?
June 8, 2009, 9:09 p.m. by Shea Gunther
The Yangtze River in China is piling up behind the massive Three Gorges Dam. Now satellite photos show us exactly how the rising waters are changing the ecosystem.