WEBVTT JENNIFER: WELCOME BACK. THE LAST TIME THEY JOINED US WE MADE WATER RESISTANT SAND. NOW ELEPHANT TOOTHPASTE. >> YOU PROBABLY DON'T WANT TO PUT THIS IN YOUR MOUTH. THIS IS A FUN CHEMISTRY ...

This article was first published in the September 2015 issue of WIRED magazine. Be the first to read WIRED's articles in print before they're posted online, and get your hands on loads of additional ...

Toothpaste is something most of us use daily. But did you know that most conventional brands contain at least one harmful ingredient? Ingesting a small amount of these ingredients twice a day, adds up ...