String theory began over 50 years ago as a way to understand the strong nuclear force. Since then, it’s grown to become a theory of everything, capable of explaining the nature of every particle, ...

For decades, physicists have been trying to combine quantum physics and general relativity into a single, unified theory. One of the leading contenders is string theory, an elegant vision in which ...

CR's tests have found that you don't have to pay a lot to get a capable tool A string trimmer, like these from Echo, Husqvarna, and Ego, can reach tight spots that a lawn mower can't. By Paul Hope ...