A tumour affecting mussels in Chile and France is traced to a single Northern Hemisphere mussel of a separate species.

The olfactory bulb was considered crucial for a sense of smell, but a chance discovery challenges the dogma.

A cloud dating to the Universe’s early days hints that star formation had an early start.

Iconic landscapes of the western United States are more likely to burn if they are overrun by invasive grasses.

Scientists evaluate the seismic risk facing a portion of North America by comparing a centuries-old mega-quake with two recent events.

A grey wolf in Mongolia roamed more than 7,000 kilometres in a single year, but caribou boast the longest annual migration.

Too little shut-eye raises anxiety; deep sleep offers protection against it.