The chances of intelligent life emerging in our universe—and in any hypothetical ones beyond it—can be estimated by a new ...

An elusive particle that first formed in the hot, dense maelstrom of the early universe has puzzled physicists for decades.

Waiting is a bummer — so don't. Nab up to 50% off everything from laptops to coffee makers and TVs before the holiday rush. After testing dozens of contenders, we've put together a list of good ...