Crocs Keep an Eye on You While They Sleep

Sleeping with only half your brain sounds like a great way to become a zombie in no time, but for certain marine mammals and birds, it’s a way of life. A new study suggests that crocodiles, too, may be “unihemispheric” sleepers, a finding which makes humans and other full-brain snoozers look more and more like… »10/22/15 9:00pm10/22/15 9:00pm