CAMBRIDGE, MA. -- In the dead of a Martian winter, clouds of snow blanket the Red Planet's poles — but unlike our water-based snow, the particles on Mars are frozen crystals of carbon dioxide. Most of ...

Amid the many mysteries of quantum physics, subatomic particles don't always follow the rules of the physical world. They can exist in two places at once, pass through solid barriers and even ...

Almost anything is possible — at least for a subatomic particle. One of the many mystifying consequences of quantum mechanics — the rules that govern the behavior of tiny subatomic particles — is that ...