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you know nothingsubscribe it039s free http:bitlyiotbs_sub more info and sources below valar more-curiouswinter:seasons of westeros and the 3-body problem: http:arxivorgpdf13040445v1pdf other possible explanations for the seasons: http:io9com59063005-scientific-explanations-for-game-of-thrones-messed-up-seasons why those other reasons are wrong: http:bitly1hyurdjhttp:boingboingnet20120514great-moments-in-pedantry-winhtml http:wwwsciencedirectcomsciencearticlepiis0019103511004064 http:enwikipediaorgwikimilankovitch_cycles note on moons and stabilization: i039m adding this comment after the video goes up: in retrospect i should have said that a moon doesn039t necessarily have to be present to stabilize a planet while our moon does cancel out some tugging from the other planets in the solar system here039s a recent paper shows that moonless planets can orbit with great stability even without the influence of a moon basically moons aren039t required for stability: http:barnesosnetpublicationspapers201201icarusbarnesmoonlessearthpdfeven more reasons for the seasons: http:wwwtorcomblogs201105how-seasons-qworkq-in-a-song-of-ice-and-fire geology:generation anthropocene039s amazing geologic history of westeros and essos: http:wwwstanfordedugroupanthropocenecgi-binwordpressgame-of-thrones-geology valyrian steel:damascus steel: http:enwikipediaorgwikidamascus_steel dragon fire:kyle hill039s explanation for real-life dragon fire: http:blogsscientificamericancombut-not-simpler20140102smaug-breathes-fire-like-a-bloated-bombardier-beetle-with-flinted-teeth dragon flight:dragon-sized birds are biologically impossible: http:wapost1lbv2re wildfire: greek fire: http:wwwsciforumscomwhat-is-greek-fire-t-68540html trimethyl borate flame by hkparker: https:wwwyoutubecomwatchv=6orisgbsrmg milk of poppy:opates: http:enwikipediaorgwikiopium the wall:compression melting of ice: http:wwwredditcomrasksciencecomments1qkdl0can_ice_be_compressed_into_water dire wolves:canis dirus: http:enwikipediaorgwikidire_wolf real-life characters:abandon all productivity ye who click here: http:history-behind-game-of-thronescom starklannister feud in real life tapestry: http:history-behind-game-of-thronescomwp-contentuploads201403porte_saint_denis170-753x1024jpg -----------------have an idea for an episode or an amazing science question you want answered leave a comment belowfollow me on twitter: jtotheizzoeemail me: itsokaytobesmart at gmail dot comfacebook: http:wwwfacebookcomitsokaytobesmartgoogle https:plusgooglecomitsokaytobesmart for more awesome science check out: http:wwwitsokaytobesmartcomjoe hanson - host and writerjoe nicolosi - directoramanda fox - producer spotzen inckatie graham - director of photographyedited by stephanie noone and kirby conn from arts ampamp laborjohn knudsen - gaffermusic:quotouroborosquot by kevin macleodproduced by pbs digital studios: http:wwwyoutubecomuserpbsdigitalstudios -----------last week039s video: maternal connections - https:wwwyoutubecomwatchv=yvqjxwb-mcu more videos: the far future of the universe - https:wwwyoutubecomwatchv=jl9dwnoonoa the science of dust - https:wwwyoutubecomwatchv=8qzk2omuaeg there was no first human - https:wwwyoutubecomwatchv=xdwlhxi24mo how the elements got their names - https:wwwyoutubecomwatchv=mtg9p6a6xny

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