Answer: Lots of chemicals. Check out this interesting explanation from Wired.
What's in your toothpaste?
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This page contains a single entry by William Polley published on October 8, 2007 7:48 PM.
111,000 Jobs in September: Good enough for Fed to hold? was the previous entry in this blog.
Physics Nobel for the discovery that made the iPod possible is the next entry in this blog.
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