 Climate and food security researchers show that higher growing season temperatures will lower crop yields, first in the tropics and subtropics. You're talking about very large reductions in yields on the order of 20, 30, 40 percent. If we can't stop the seas rising, if you allow for a two-degree rise in temperature, we're actually agreeing to kill us. In North Miami, a couple feet of water covered the road in this neighborhood. Some cars made it through with water up to their headlights. Other drivers weren't so lucky and ended up stranded. This van ended up stuck. Acidification acts a lot like osteoporosis does in humans, but in marine animals, it makes their shells and skeletons brittle. The more acidic the water, the harder it is for corals to grow their skeletons.