If global warming continues on a worst-case trajectory, then large swathes of equatorial land may be uninhabitable to humans in 50 or 100 years. More than a bil

If global warming continues on a worst-case trajectory, then large swathes of equatorial land may be uninhabitable to humans in 50 or 100 years. More than a billion people will be forced to migrate or die. If it comes to that, the death toll will be much worse than a few bad winters.