A new study found that microgravity simulated on Earth hindered sperm cell movement, egg fertilization and embryo development ...

Getting to Mars is difficult. Conceiving a child there could be even tougher than expected. A recent study led by researchers from University of Adelaide has demonstrated that simulated microgravity ...

Sperm may lose their ability to navigate in microgravity, raising new questions about whether human reproduction is possible ...

Who hasn't seen it before: the view through the microscope in which a sperm penetrates an egg cell and fertilizes it. This fundamental step in procreation happens dynamically and seemingly without ...

In a common metaphor used to describe human fertilization, sperm cells are competitors racing to penetrate a passive egg. But as critics have noted, the description is also a 'fairy tale,' rooted in ...

When sperm meets egg, the start of life is not quiet. Under a special microscope, researchers have watched a tiny light show at fertilization. They see a microscopic flash at fertilization, a burst of ...