(Mother Jones) -- Sen. Rand Paul (R-Ky.) has suggested that vaccines cause "profound mental disorders." Paul has also said he's "not sure anybody exactly knows why" the climate changes. So the likely presidential contender would probably find this fact pretty confusing: According to leading scientists, vaccines are among the "most effective" weapons in our arsenal for combating the threats that global warming poses to human health.
In its landmark report (PDF) last year, the UN's Intergovernmental Panel on Climate Change warned that global warming poses a range of health threats—especially in the developing world. Warmer temperatures and changes in rainfall will reduce crop production, leading to malnutrition. Foodborne and waterborne illnesses will become a bigger problem. And, some scientists argue, diseases like malaria will spread as the insects that carry them migrate to new areas.
So how should humanity adapt to these dangers? The IPCC report lays out a slew of public health interventions, including widespread vaccination:
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