Milk is pretty normal, right? Boring even! But have you ever thought about it? Like, really thought about it? We have! And I gotta say, it led us to some challenging places. 

Follow us on Twitter @SciShowTangents, where we’ll tweet out topics for upcoming episodes and you can ask the science couch questions! 

While you're at it, check out the Tangents crew on Twitter: Stefan: @itsmestefanchin Ceri: @ceriley Sam: @slamschultz Hank: @hankgreen