A giraffe's long legs aren't just for height, they save energy by reducing how hard the heart works to pump blood upward against gravity.

Two decades ago, the mathematician Moon Duchin spent her summers teaching geometry at Mathcamp, a program for mathematically talented teens. Campers contemplated notions such as how to prove whether a ...

In the words of Dr. Lawrence M. Krauss, space and time cannot contain the fundamental laws of physics because they generate ...