It was 100 years ago when Max Planck published a paper that gave birth to quantum mechanics – but he didn't immediately realize the consequences of his work, says Helge Kragh
The idea that the universe is trapped on a membrane in some high-dimensional space-time may explain why gravity is so weak, and could be tested at high-energy particle accelerators
Physical fitness is no longer enough to guarantee a gold medal at the Olympics, but an understanding of the science behind the sport may give competitors that crucial edge