It's commonly thought that sperm "race" to the egg, with the winner fertilizing it. But is this really the case?

This process is known as insemination. The fertilization process occurs naturally when sperm enters the egg within a few ...

Official and unofficial teachings in The Church of Jesus Christ of Latter-day Saints, namely a belief in a premortal life, ...

The success of in vitro fertilization depends on many factors, one of which is sperm viability. A recent study from the ...

An NBC News analysis found hundreds of lawsuits over five years alleging that embryos were lost, destroyed or swapped by ...

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery. The process of how a humble single cell becomes an organism fascinates scientists across ...

The success of in vitro fertilization depends on many factors, one of which is sperm viability. A recent study from the University of Illinois ...

Syngenta Biotechnology China-led research, with partners in the U.S., France, the UK, Chile, the Netherlands, Argentina, and ...

A recent study documents a new way to select viable sperm and prolong their viability in the laboratory, reducing one source of variability during the process ... % of the eggs were fertilized ...

Egg fertilization is often described as ... in all of this is actually the female reproductive tract." Sperm do swim during this process, but "the major movement is actually provided by ...