“If Europe thinks they have a problem with migration today … wait 20 years,” said retired US military corps brigadier general Stephen Cheney. “See what happens when climate change drives people out of Africa – the Sahel [sub-Saharan area] especially – and we’re talking now not just one or two million, but 10 or 20 [million]. They are not going to south Africa, they are going across the Mediterranean.”

Source: Climate change ‘will create world’s biggest refugee crisis’ | Environment | The Guardian