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 ...

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 ...

Early lab work shows reprogrammed skin cells can yield embryos, hinting at future infertility solutions but raising safety questions that demand more study. Infertility affects millions of people ...