NIST's new compact atomic clock design uses cold atoms to boost precision

Physicists at the National Institute of Standards and Technology (NIST) have demonstrated a compact atomic clock design that relies on cold rubidium atoms instead of the usual hot atoms, a switch that promises improved precision and stability.

New clock would stay accurate for billions of years

A proposed new time-keeping system could make atomic clocks look positively erratic, staying accurate to one twentieth of a second over 14 billion years - the age of the universe.

New evaluation determines world's most accurate clock

A caesium fountain clock that keeps the United Kingdom's atomic time is now the most accurate long-term timekeeper in the world, according to a new evaluation - twice as accurate as was previously believed.

World's smallest atomic clock goes on sale

Well, it's certainly annoying when your wristwatch doesn't keep perfect time. But there's a solution - yes, the world's smallest atomic clock is now available commercially, for only $1,500.