Stickr is a free service that helps you comment and share anything on the Web, follow others comments and leave notes for yourself and your friends - on any website you want!
Join Stickr today to start following youtubefeed's stickers and comment websites on your own.
Blue jeans are among the most popular clothing items in the entire world. But how did Levi Strauss get his “workwear,” as he called it, so blue? Through chemistry, of course. This week, we look at the chemistry of everyone’s favorite pair of pants.