Some itches are caused by obvious physical triggers (OMG, there's a spider on your arm!). Others, though, have a more complicated source. Watching other people itch can make you feel itchy. In this piece at Scientific American blogs, Scicurious explains the neurobiology behind sympathetic itching. I got four paragraphs in before I had to scratch my neck. How about you?
I am itchy. You are itchy. We're all itchy together.
Goldene is a film of gold one atom thick
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