In an attempt to try and find the mystical “philosopher’s stone,” which would turn other metals into gold, one scientist from the 1600s decided that the key ingredient he must explore was…urine. But while he didn’t find the key to alchemy, he did find one of the elements on the Periodic Table. Find out how on this week’s show. In the news: Can you lose weight by thinking hard?, Tesla is America’s most valuable automaker, Twitter bans political ads, America’s food map, dead body space junk, and more.

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