Don't worry. There will be mass migrations of people as oceans and deserts encroach upon inhabited areas. There will be wars over access to fresh water and ag

Don't worry. There will be mass migrations of people as oceans and deserts encroach upon inhabited areas. There will be wars over access to fresh water and agricultural land. Yet once mother nature has gotten humanity's behaviour in check, the hairless ape will persist. (This response is not intended to taken literally. My point is that we will survive, though the process of adaptation may be painful and we may not like what we may not enjoy what we are adapting to.)