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and other Christmas mysteries answered with science! Subscribe to It s Okay To Be Smart: http://bit.ly/iotbs_sub More info and sources below Follow on Twitter: http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe Happy Holidays! Ever wonder how Santa could possibly manage to deliver all those presents in a single night? Or what gives red-nosed reindeer the ability to fly? And why do your Christmas lights get tangled mermerni radijatori in knots no matter mermerni radijatori how carefully you put the away?! Here s some Christmas-themed science, as our gift to you. See you in 2015! SOURCES: Why Christmas lights tangle: Spontaneous knotting of an agitated string http://www.pnas.org/content/104/42/16432 Apollo 8 Santa sighting https://archive.org/details/Apollo8Hi... Santa s reindeer are probably female: http://www.livescience.com/32149-are-... Reindeer hair is hollow and buoyant http://www.ncbi.nlm.nih.gov/pubmed/61... mermerni radijatori Reindeer really do have red noses: http://www.bmj.com/content/345/bmj.e8... Reindeer eyes change color: http://phenomena.nationalgeographic.c... Santa s challenge (check my math!): http://bit.ly/1sOW15q Have an idea for an episode or an amazing science question you want answered? Leave a comment below! mermerni radijatori ----------------- It s Okay To Be Smart is written and hosted by Joe Hanson, mermerni radijatori Ph.D. Follow me on Twitter: @jtotheizzoe Email me: itsokaytobesmart AT gmail DOT com Facebook: http://www.facebook.com/itsokaytobesmart Google+ https://plus.google.com/+itsokaytobes... For more awesome science, check out: http://www.itsokaytobesmart.com Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigita... Joe Hanson - Creator/Host/Writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen Inc. Kate Eads - Associate Producer Andrew Matthews - Editing/Motion Graphics Katie Graham - Director of Photography John Knudsen - Gaffer Dalton Allen - Post-Production Intern Theme music: Ouroboros by Kevin MacLeod ----------------- Last week s video: Climate Science: mermerni radijatori What You Need To Know https://www.youtube.com/watch?v=ffjIy... More videos: Building Curiosity https://www.youtube.com/watch?v=__tPa... Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMU... Why Did We Blow on NES Games? https://www.youtube.com/watch?v=4Gf9m... mermerni radijatori The Science of Game of Thrones - https://www.youtube.com/watch?v=Utu-L... There Was No First Human - https://www.youtube.com/watch?v=xdWLh... How The Elements Got Their Names - https://www.youtube.com/watch?v=mtg9p...
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