We’re used to talking about migration in economic terms, or for asylum seekers in language of threat and safety - but some scientists believe climate may become the biggest, irreversible driver for the mass movement of millions of people by the end of the century. <br /> <br />Despite increased pledges and targets to tackle climate change, the world is currently on course for warming of around 2.7% by then, far above the Paris Agreement of 1.5%. <br /> <br />Kate Lamble examines a new report which attempts to quantify the human cost of climate change, and where it would no longer be safe to live.
