How Facebook could stop a disease outbreak

Credit: National Cancer Institute Facebook accounts and telephone records can be used to pinpoint the best individuals to vaccinate to stop a disease outbreak in its tracks, researchers said Wednesday. Such people would be “central” in their social networks, and thus likelier to spread disease-causing germs from one group to another. Assuming there is…

Maths for midges that pull 10g

A cecidomyiid laying eggs on grass. Credit: Sarefo/GFDL Midges move with ferocious randomness, frequently subjecting themselves to accelerations of more than 10g, well beyond the limit of fighter pilots, as they duck and dive in swarms that still retain an almost paradoxical cohesiveness despite blustery wind or powerful updrafts. Collectively, midges move very differently from…