Scientists at a biotech company say they have created a key stem cell for Asian elephants that could help save the endangered species and become a steppingstone for bringing back the woolly mammoth.

A team of researchers from NYU spent two years plucking away mice hair to watch what happened when it grew back. They noticed a stem cell malfunction that may explain your silver strands.

Tiny, robotic fish powered by human heart cells suggest that scientists are getting closer to their goal of building replacement hearts from living tissue.