A new study argues that a nuclear war between India and Pakistan would cause global cooling and planet-wide food shortages.
Why it matters: Scientists have debated the climatic effects of nuclear war. New computer models show even a comparatively limited nuclear exchange could have global impacts on food production that would eclipse the worst famines in documented history.
Moderna has moved incredibly quickly to begin testing a potential vaccine for the new coronavirus in U.S. patients. The biotech company went from taking the genetic sequence of the new coronavirus to manufacturing its first batch of vials in less than a month.
Reality check: Best-case scenario, a vaccine could be ready for production by next year — but that's assuming the drug proves to be both safe and effective, which is completely unknown right now.
