A relentless melting of the Arctic greatly accelerated this summer, a warning sign that some scientists worry could mean global warming has passed an ominous tipping point. One even speculated summer sea ice would be gone in five years. ...more

December 12, 2007

The vivid sunsets painted by J.M.W. Turner are revered for their use of color and light and their influence on the Impressionists. But could they also help global warming experts track climate change? ...more

December 2, 2007

Just what Florida needs, more humidity. A study reported this week in the scientific journal Nature says global warming is causing humidity to rise. In the Sunshine State, that could mean more intense but fewer thunderstorms, more fuel for hurricanes, and a higher misery quotient during summer. ...more

October 12, 2007