Breakthrough: Scientists build a beating mouse heart with human tissue

In a major scientific first, a team of developmental biologists has built a functional mouse heart from human tissues. The results herald a future where specific patches of heart muscle – or even the whole organ – could be grown for transplantation. » 8/14/13 9:20am 8/14/13 9:20am

Researchers uncover key clues in the mystery of limb regeneration

Why do some salamanders regenerate limbs faster than others? A team of biologists has identified genetic factors that may dictate the rate at which limbs and organs re-grow in these incredible amphibians, shedding much-needed light on one of the most remarkable physiological feats in the animal kingdom. » 7/03/13 2:00pm 7/03/13 2:00pm

What can a fetus hear in the womb?

We've seen parents-to-be in sappy movies putting headphones or speakers up to the pregnant woman's stomach. Sometimes they're trying to make the fetus listen to some grandparent's voice. Sometimes they're trying to make some kind of crazy-smart super baby. But can a fetus stuck behind thick walls of flesh hear any of… » 2/09/11 6:30am 2/09/11 6:30am