Stuff You Should Know
Don't Be Dumb: Are There More Grains of Sand on Earth or Stars in the Universe?
Have you ever gazed up into the night sky and wondered whether there are more grains of sand on Earth or stars in the universe? Well get back inside and watch this video.
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Stuff You Should Know: Can Chuck Feel Josh's Pain?
People with mirror-touch synesthesia literally feel the pain of others -- but why? Tune in as Josh and Chuck explain the fascinating mechanics of mirror neurons in this exclusive video from HowStuffWorks.com and the Science Channel.
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