Covering Your Tracks Online is Suspicious

The drawback to covering your tracks like this on a daily basis is that it sometimes makes you look like, well, like you’re covering your tracks. People who engage all of their privacy functions sometimes stand out in a transparent society. It may make people suspicious, thinking that you’re up to something. If you’re only encrypting your communications with certain people, it sometimes makes it look even worse, like you’re collaborating—and it also pinpoints who you’re in cahoots...

 The Laetoli Footprints

team of paleoanthropologists led by Mary Leakey confirmed the bipedality of A. afarensis with another remarkable find in Tanzania: the famous “Laetoli footprints.” In 1976, Andrew Hill and another member of the team were taking a break by indulging in a favorite field pastime: pelting each other with chunks of dried elephant dung. Looking for ammunition in a dry stream bed, Hill stumbled upon a line of fossilized footprints. After careful excavation, the footprints turned out to be an ...

 Babies Look to Mothers for Cues on How to React to the World

Other experiments also show that one-year-olds have a radically new understanding of people. What happens when you show a baby something new, something a little strange, maybe wonderful, maybe dangerous—say, a walking toy robot? The baby looks over at Mom quizzically and checks her out. What does she think? Is there a reassuring smile or an expression of shocked horror? One-year-olds will modify their own reactions accordingly. If there's a smile, they'll crawl forward to investigate; if th...