Sperm can live for up to five days inside the female reproductive tract. Outside of the body, sperm can live for up to an hour at room temperature. Sperm can survive for decades if properly frozen by ...

The cellular biology of reproduction is often depicted as an epic journey, in which millions of intrepid sperm fight to be the first to claim the ultimate prize: the chance to fertilize the egg, which ...

For decades, sperm were thought to become fully active the moment they entered the female reproductive tract. New research suggests otherwise. A temperature-sensitive switch inside sperm cells may ...