LONDON — Since in many species, sperm is males’ only contribution to reproduction, biologists have long puzzled about why evolutionary selection, known for its ruthless efficiency, allows them to ...

The following is an excerpt from The End of Sex and the Future of Human Reproduction by Henry T. Greely. This is a book about the future of our species, about the likely development of revolutionary ...

MHR publishes articles on the basic science of human reproductive physiology and pathology, endocrinology, andrology, gonadal function, gametogenesis, fertilization, embryo development, implantation, ...

Scientists are working to create human eggs in a laboratory dish, but the process is proving to be more challenging than ...

The idea of a colony of humans on Mars isn't just science fiction anymore; NASA and space agencies around the world, along with independent scientists and researchers, are working hard to determine ...

Women who wait until 35 to start trying for a family were warned today (Thursday 17 June) that if they did not conceive spontaneously they could not depend on assisted reproduction to make up fully ...

Some 40,000 years ago, the world lost a species of ancient human: the Neanderthals. Their extinction happened not too long after Homo sapiens is thought to have arrived in Europe — the Neanderthals’ ...