It came from the faucet

There’s something nasty in the water, but Maggie Koerth-Baker has you covered.

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Legos and green army men show you how cold sores work

Anne of Green Gables had herpes. And now, you can learn a little more about how herpes hides out in your body and how it causes cold sores with the help of University of Texas professor Chris Sullivan, a bunch of legos, and a platoon of green army men.

Many thanks to Joe Hanson!