What is going on with this terrifying ball of flies?

Louise Davis, a water resources advisory officer in north Devon, UK, was doing an assessment of the local river Torridge. What she found mystified her. Enormous balls of flies were dangling from trees over the water. Each "ball" was solid flies — perhaps hundreds of the insects. She'd never seen anything like it. » 7/26/13 3:20pm 7/26/13 3:20pm

This alien-looking fish just rewrote the book on developmental genetics

If you were to suggest that members of Elasmobranchii — the subclass of cartilaginous fishes that includes sharks, rays, and skates — look incredibly different from us humans, I doubt that many people would argue the point. In fact, one look at the alien-like skeleton of Leucoraja erinacea, the species of skate… » 12/15/11 12:13pm 12/15/11 12:13pm