For the first time, scientists have observed water molecules splitting in real time to form hydrogen and oxygen. And right ...

For years, scientists were baffled by a peculiar problem: why do platinum electrodes, usually stable, corrode so quickly in ...

Bohr applied it to the spectrum of light emitted and absorbed by hydrogen atoms. The basic hydrogen atom is the simplest of all atoms, now known to consist of a single proton and a single electron.

Water may have formed less than 200 million years after the Big Bang, suggesting some conditions for life existed far earlier than previously thought.