Scientists studying one of the most mysterious whale species find they form long-term alliances, sometimes lasting many years.

Scientists who claimed to have found evidence for a cosmic super-expansion at the Big Bang made no such discovery, a leak of a concluding study suggests.

Norovirus, the most common cause of gastroenteritis in the world, can be killed with "cold plasma", scientists report.

The European Space Agency says it will conduct no more dedicated searches for its lost comet lander, and will now wait for the probe itself to call home.