All the agony of childbirth had hit her in a single wave.

CNN: Delivering my son: 'Breathe, baby, breathe!'

If the tide of South-East Asian migrants had broken upon Bradford in a single wave, as did the Kenyan and Ugandan Asians who fled to London and the Midlands in the late 1960s and early 1970s, their story would be simpler, and happier.

ECONOMIST: Segregation

We have always had huge day-to-day and year-to-year variations in our weather, and we always will do, and a couple of cold winters are no more evidence that climate change has stopped than a single summer heat-wave proves that global warming is happening.

BBC: Time to spend more money preparing for colder winters?

On the face of it, though, relying on a single source limits the sorts of wave that can be produced, and therefore the types of task they can perform.

ECONOMIST: Acoustic microfluidics

The new single currency has also set off a wave of cross-border mergers and acquisitions.

ECONOMIST: Wo ist Goldilocks?

Thanks to an engineer's trick called "wave division multiplexing, " a single fiber-optic thread can carry upwards of 10 trillion bits per second.

FORBES: Digital Rules

These waves travel at the speed of sound, but when a jet travels at Mach 1 and above these waves merge into one single shock wave as they cannot get out of the way of each other quickly enough.

CNN: Bang goes the sonic boom

Inevitably, the move will be interpreted as a snub to the British government because of its reluctance to join the first wave of Europe's single currency.

ECONOMIST: Toyota learns French | The

As a simplified model, Dr Page imagines a wave function for a whole universe (for these purposes, a universe can be considered as a single particle), from which two possible versions might be born.

ECONOMIST: The universe, it appears, may not be alone