3C warming

Lincolnshire’s flat, low-lying agricultural plains, which stretch north from the fens, curling around the Wash to Skegness and Grimsby, have long been a frontline of mankind’s battle to claim and protect food-producing land from the sea.

But with sea levels rising, a managed retreat is underway that threatens to become a full-scale rout if global temperatures rise by 3C. The UN warns that they will unless governments take far more drastic action to reduce emissions.