A small prototype nuclear battery powered by a radioactive form of carbon can safely power devices for decades – and possibly even for a user’s entire lifetime – on a single charge, scientists say.

The new phase comes in the form of a pattern of electron spins—half of which are highly ordered, or "cold", and the rest of ...

Any antiprotons passing close enough to heavy atomic nuclei could create an electron-positron pair; in a tiny fraction of cases, the antiproton would bind with the positron to make an atom of ...