A window of time just opened in Yosemite National Park when nature photographers wait, as if for an eclipse, until the moment when the sun and earth align to create a fleeting phenomenon. This marvel of celestial configuration happens in a flash at… more »

The Register / By Rik Myslewski in San Francisco If life ever existed on Mars, it's likely that its longest-lasting enclaves would be underground. "If surface habitats were short-term, that doesn't mean we should be glum about prospects for life on M… more »

By Dan Gilgoff, CNN Belief Blog Co-Editor The ongoing Chick-fil-A flap - which has gay rights groups blasting the restaurant chain for donating food to an anti-gay marriage group - may be a fleeting controversy for a privately held company that is more… more »