social networks University of Pennsylvania These social animals inherit friends from mom A mathematical model shows how animals—spotted hyenas, sleepy lizards, rock hyraxes, and bottlenose dolphins—get their social networks from their mothers. Read Article
speed Penn State How to smooth the ride for high-speed submarines One way to increase the speed of underwater vehicles it to use bubbles. It's called supercavitation. And engineers say they have a way to improve it. Read Article
