Australia brought digging mammals back to an 8,000, hectare sanctuary; 8 years later, scientists found they had reshaped underground insect communities

In 1947, fruit flies were sent into space using captured German rocket. Decades later, NASA studied how space affects immunity

Underwater sensors caught a rare event off Cornwall: one porpoise became trapped in a net while two animals exchanged possible distress calls

Quote of the day by Isaac Newton: “Truth is ever to be found in simplicity, and not in the multiplicity and confusion of things"

A Scottish river project set out to revive oysters that once covered an area the size of Edinburgh; now, 60,000 have been returned