Clock is based on a single atom

It may not be as accurate as today's atomic clocks, but it's an awful lot simpler in concept: a new way of measuring time based on the mass of an atom.

Apple pays out for copied clock design

When you've come up with an iconic design that's instantly recognizable but easily copied, you have every right to keep it for yourself.

Spacetime clock could outlast the universe as we know it

A 'spacetime crystal' sounds like something Doctor Who might keep in his kit-bag - but it's actually much more dramatic than that: a clock that could keep perfect time forever, even after the heat-death of the universe.

Ten thousand-year clock takes shape in Texan cave

It's a grand gesture on the scale of Ozymandias - although somewhat less egotistical - a clock designed to keep time for ten thousand years.

Apple alarm bug continues to hit users

We're always being told that people don't get enough sleep nowadays, and Apple seems determined to do its bit to put things right.

PS3 consoles recover from critical leap year error

A red-faced Sony has confirmed that its Playstation 3 consoles are now recovered from an internal clock glitch.

World's most accurate clock unveiled

Physicists at the National Institute of Standards and Technology (NIST) have built the world's most accurate clock.