With diplomats soon to head to New York to sign the Paris agreement, the world is already making progress towards achieving its goals, says Christiana Figueres
Greenland's ice usually doesn't start melting much until mid-May. This April’s temperatures above 10 °C have led a tenth of the ice there to start melting already
Beetles can skate across water by decreasing the surface tension - now tiny engines made from droplets, nanopowder and laser light are using the same trick
Biologist David Barash weighs up the latest explanation for one of human evolution's enduring mysteries and finds that there are more plausible alternatives