Battery string trimmers start up effortlessly, perform quietly, and have zero emissions. Gas string trimmers have endless run times (as long as you refuel). Both styles of these tools remain popular, ...

There are many reasons to opt for a string trimmer that’s electric as opposed to gas-powered: Electric string trimmers turn on instantly and require minimal maintenance, for starters. In addition, ...

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, ...

In 1980, Stephen Hawking gave his first lecture as Lucasian Professor at the University of Cambridge. The lecture was called "Is the end in sight for theoretical physics?" Forty-five years later, ...

As days grow shorter and darker, it’s a good idea to invest in outdoor lights. These popular accessories don’t require any major installation or rewiring, and ...

String theory captured the hearts and minds of many physicists decades ago because of a beautiful simplicity. Zoom in far enough on a patch of space, the theory says, and you won’t see a menagerie of ...

String theory found its origins in an attempt to understand the nascent experiments revealing the strong nuclear force. Eventually another theory, one based on particles called quarks and force ...

Scientists seeking the secrets of the universe would like to make a model that shows how all of nature’s forces and particles fit together. It would be nice to do it with Legos. But perhaps a better ...