A Body Clock Pioneer + 199 Hopeful Corpses

• Do you do your best work during the day, or at night? If it was always dark, how much would you sleep? We still have a lot to learn about how much sleep our bodies need. But a lot of what we do know comes from a guy who spent a crazy amount of time in a dark cave trying to learn the answers by experimenting on himself.

• That rumor about Walt Disney isn’t true! But there are people who are paying to have themselves frozen (not just their heads!) with the hope of being revived in the future.