EnvironmentPen Hadow: Climate change is making my epic Arctic crossing impossible The Arctic Ocean I trekked across 21 years ago is melting fast, becoming a potential shipping super-highway. That should worry us all, says the explorer and ocean conservationist Comment
EnvironmentIs a vital ocean current just decades away from catastrophic collapse? Two studies suggest the Atlantic meridional overturning circulation could collapse by the middle of the century and wreak havoc with the climate, but such predictions are controversial Analysis