“Snowbird”, a human-powered aircraft with flapping wings, has become the first of its kind to be capable of sustained flight, say its creators at the University of Toronto. The ornithopter maintained both altitude and airspeed for 19 seconds, and covered a distance of 145 meters at an average speed of 26 kilometers per hour. Snowbird […]
Johns Hopkins scientists have produced a compound capable of rapidly turning off appetite in mice and causing weight loss similar in many ways to that achieved by fasting. When injected, the substance, which is apparently non-toxic to the mice, wipes out the animals’ interest in food within 20 minutes. The effect of the chemical called […]
