12-month-old babies recognise emotional reactions and link them to their cause

Researchers have shown what parents everywhere already know: babies can recognise a range of emotional reactions such as "mmm!" and "aww!" and connect them to their probable cause, such as a dessert or another cute baby.

Ring discovered around 'potato-shaped' dwarf planet Haumea

A ring system has been found around a dwarf planet for the first time — the distant, potato-shaped Haumea, which lies beyond Neptune.

Volcanic eruptions may have contributed to war in ancient Egypt

Distant volcanic eruptions may have indirectly triggered a series of revolts by the people of ancient Egypt against their despised Ptolemaic overlords.

Diprotodon may have been seasonal migrant

The largest marsupial to have ever lived, Diprotodon optatum, a 3,000-kilogram herbivore that stood 1.8 metres tall at the shoulder, may have been a migratory species, an analysis of a fossil tooth suggests.

Gravitational waves detected for fourth time

Scientists have detected gravitational waves — tiny ripples in the fabric of space-time — for the fourth time. Just like the first three detections, these ripples were caused by the merging of two black holes.