Hello and welcome to the Coin Bureau. My name is Guy and in today's video we'll be looking at Do you know what. You've probably seen and heard enough of me lately.Here on this channel, we're always looking to showcase new talent and I'm delighted that we've recently welcomed a brand new presenter in the form of the excellent DC Roth. So, for today's deep dive into a little known chemical that keeps the world turning, I'm going to leave you in his capable hands. I'll be back soon with another video, but in t ...