Periodicvideos film-maker Brady Haran with a message to mark our 300th upload. DETAILS OF OUR PAPER IN NATURE CHEMISTRY: http://periodicvideos.blogspot.com/2011/02/paper-in-nature-chemistry.html Here's a link to Backstage Science: http://www.youtube.com/BackstageScience More from us http://www.periodicvideos.com/