Habitat destruction drives species extinct more slowly than previously thought, according to a new model described in this week's Nature. 'We have bought a little time for saving species,' says scientist.
On first day of autumn, thoughts often turn to the coming blaze of fall foliage. But in New England, an unusually hot and dry summer may portend a shorter, and paler display this year.
Walden Pond and global warming, truckers don their skirts, and how Arctic flow can snowball.