Chemical and Engineering News, a publication of the American Chemical

Chemical and Engineering News, a publication of the American Chemical  Society, has a feature called "What's That Stuff?" 

http://pubs.acs.org/cen/whatstuff/stuff.html

These articles give you a look at the chemicals behind everyday products both naturally occurring and man-made. Then select one and post a brief summary of the article. What did you learn from this exercise? Must have references.