Just how sensitive is Earth's climate to increasing concentrations of carbon dioxide?
Is the big bang, and all that came from it, a holographic mirage from another dimension?
Slower warming than predicted gives the world time to develop better energy technologies
A dozen quasars in the early universe appear to have shut down in just a few years, baffling astronomers
What genetic oddities does rock's Prince of Darkness and beheader of bats have entangled deep in his genetic code? Knome, the company that analyzed Ozzy's full genome, divulges some of the details in a Q&A
Black isn't the new green
World leaders at the U.N. climate conference are trying for the 21st time to limit greenhouse gas emissions. Here's how they can finally reach meaningful agreements
Pets and people shed clouds of microbes as unique and personal as their fingerprints, but the clouds can change over time.