78 - Salt

Summary: <p><span>Salt: a mineral so nice that much of early human civilization was based on its procurement! Now we put big chunks of it on tasty pretzels at the mall! </span></p> <p><span>Follow us on Twitter @SciShowTangents, where we’ll tweet out topics for upcoming episodes and you can ask the science couch questions! </span></p> <p><span>While you're at it, check out the Tangents crew on Twitter: Stefan: @itsmestefanchin Ceri: @ceriley Sam: @slamschultz Hank: @hankgreen</span></p> <p><span>If you want to learn more about any of our main topics, check out SciSHowTangents.org!</span></p>