NOVA: String theory's great claim to fame is that it unifies the four forces. Why is unification so important? Weinberg: Unification is where it's at. The whole aim of fundamental physics is to see ...

Today's physicists are struggling with a quandary. They have accepted two separate theories that explain how the universe works: Albert Einstein's general theory of relativity, which describes the ...

But despite its extraordinary popularity among some of the smartest people on the planet, string theory hasn’t been embraced by everyone–and now, nearly 30 years after it made its initial splash, some ...

String theory, conceptualized more than 50 years ago as a framework to explain the formation of matter, remains elusive as a ...

The original version of this story appeared in Quanta Magazine. String theory captured the hearts and minds of many physicists decades ago because of a beautiful simplicity. Zoom in far enough on a ...

All you need is some string. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Has the universe been around forever? If so, perhaps it's been ...

Michio Kaku, a Harvard graduate and theoretical physicist, is renowned for his work in string theory and science ...