@neiltyson Could test it here today: http://weather.gc.ca/city/pages/mb-38_metric_e.html …
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@neiltyson NM, assuming you are talking F and not C! -
@rationlnational No worries. -40°C is the same temperature as -40°F
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Why 40 below was temp for no work in Gulag? MT
@neiltyson: Mercury freezes at 39 below, thermometers that contain it useless at colder tempsThanks. Twitter will use this to make your timeline better. UndoUndo
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“
@neiltyson: Another vote for 40 below zero: Mercury freezes at 39 below, rendering thermometers that contain it useless at colder temps.”Thanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson yet my school only cancels once temps reach 40-... Coincidence?Thanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson I like 2.17 where helium becomes superfluid.Thanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson that's almost as frigid as my ex-wife...Thanks. Twitter will use this to make your timeline better. UndoUndo
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson Now is the perfect time to announce your new progressive rock band, 40 Below Zero, comprised of top scientists.

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@JonRagel "Comprised of" is poor grammar. Consider using "composed of" instead - http://en.wikipedia.org/wiki/User:Giraffedata/comprised_of …pic.twitter.com/LuJII4yJSa
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@neiltyson I live in Canada, where we don't talk about wind-chill factor. It's too depressing.Thanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson I wouldLoveToSeeYouInterviewH.H.TheDalaiLama! ItsMyDreamThatYouInquireAboutAttendingMindAndLifeScienceConferenceOneDay. Cheers!!!Thanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson Hi, I learnedMuchFromCarlSagan'sCosmosAndHisManyInterviewVideosInYoutube. I StumbledOntoHimThruHisIntervewWith H.H.theDalai Lama.Thanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson Congrats on your 1000★ tweet! http://favstar.fm/t/568075021194813440 …Thanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson how can that be if it's the closest planet to the sun? Oh i see what i did there...nice!Thanks. Twitter will use this to make your timeline better. UndoUndo
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@neiltyson -40 Celsius this past weekend in our Townships of Uxbridge/Scugog/Brock. Your favorite temperature!pic.twitter.com/lrZqRL0Gm4
Thanks. Twitter will use this to make your timeline better. UndoUndo
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Fodder for a
#HokeyWx Fact. MT@neiltyson: Mercury freezes at -39°, rendering thermometers that contain it useless at colder temps.Thanks. Twitter will use this to make your timeline better. UndoUndo
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Peep this,
@FirstMatePete MT@neiltyson Another vote for -40 °F: Mercury freezes at -39 °F, rendering thermometers that contain it useless.Thanks. Twitter will use this to make your timeline better. UndoUndo
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