Go to TedTalks, http://www.ted.com/talks. Type in chemistry in the Search box and click on Magnifying glass icon. Click on talks. View one talk of at least 10 minutes, or multiple talks which total at least 10 minutes
Sample references
Go to TedTalks, http://www.ted.com/talks. Type in chemistry in the Search box and click on Magnifying glass icon. Click on talks. View one