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 ...

When it comes to reproduction, one type of red algae gets by with a little help from its friends: small sea crustaceans that transport sex cells between male and female algae, like pollen-laden bees ...

Human animals have a simple, direct system: copulation and sperm delivery may lead to fertilization of an egg, if the timing is right. Once a sperm joins an egg, the resulting zygote gets implanted on ...