Reuters: We’ve already had several sneak previews of how climate change is going to be bad for our health. From mosquito-borne diseases that jump from cows to people in East Africa, to a heatwave that killed thousands of elderly Europeans, to malaria starting to appear in the highlands of Rwanda and Swaziland in abnormally hot summers. And outbreaks of cholera as more floods hit coastal communities with poor sanitation, mixing sewage with drinking water supplies amid fetid heat. So …