New research shows how toxic chemicals hitch a ride with seabirds flying from southern latitudes to the Arctic.

Discussions at COP26 in Glasgow this month will also concern the fate of the Arctic region. If the Greenland ice sheet melts, sea levels will rise by 7 metres globally.

Previous expectations had the Arctic Sea loss predicted around 2030, but these results reveal that an ice-free day could occur as early as late summer 2027.