LifeBusy doing nothing: How sloths mastered life in the slow laneOnce defamed as slow and stupid, sloths are now recognised as masterworks of evolution – and we could all learn from their energy-saving tricksFeatures
Earth’Sno substitute: The ecological cost of fake flakes on the pisteAs temperatures rise, resorts are turning to artificial snow to make the champagne powder ski nuts desire. But that could be making climate change worseFeatures