First human-pig embryos made, then destroyed

A glimpse of possible success in this elusive goal was seen Thursday. Using stem cell technologies, researchers generated human cells and human tissues in the embryos of pigs and cattle. Their research appeared in the journal Cell.

Scientists name a crab after characters from Harry Potter

It lives in deep water near the US island of Guam in the western Pacific.

National Geographic Magazine says it's not seen very often and is a milky-yellow colour because it's so dark where it lives.

Professor Severus Snape is part of the name because he kept "one of the most important secrets in the story, just like the present new species which has eluded discovery until now, nearly 20 years after it was first collected".