Explaining Climate Change with Baseball and Steroids

If climate change – especially warming – is really the result of human activity, why have we seen some record low temperatures recently? AtmosNews lightheartedly look at why some people call carbon dioxide the steroids of the climate system.
credit : ©UCAR. Video by Noah Besser, produced by UCAR Communications for AtmosNews: NCAR & UCAR Science.
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