11 Things We Didn’t Know Last Week

News, discoveries and … fun 1. Two artists in Brooklyn are living in a giant hamster wheel. (Learn more at Huffington Post) 2. A simple blood test predicts 9 times out of 10 who will develop dementia. (Learn more at AARP) 3. Elephants can tell men from women and friends from foes by listening to their voices. (Learn more at Discovery) 4. Rolling Stone Keith Richards has written a children’s book about his first guitar. (Learn more at AARP) 5. William …