Have you ever wondered what it would be like if ice did not float? Perhaps you have never really thought about it, but you might be surprised at the impact such a change would have on our world’s climate. The Periodic Table of Videos channel discusses how ice’s ability to float has a positive effect on our climate in this terrific video.

What if ice did not float? – Periodic Table of Videos [YouTube]

via How-To Geek http://www.howtogeek.com/169853/what-if-ice-did-not-float/