Imagine a rom-com-worthy meet-cute: two strangers might hide from the rain in the same doorway or their dogs’ leashes might get tangled up in the park. Just like that, they fall in love. But a viral ...

Scientists are on the trail of a mysterious five-particle structure that could challenge one of the biggest theories in physics: string theory. This rare particle—never seen before and predicted not ...

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, ...