Scientists at Cornell University have taken a crucial step toward developing a safe, reversible, long-acting, and 100% effective non-hormonal contraceptive for men, which is considered the “holy gra...
Starting a family off-Earth might be more difficult than expected. New research from the University of Adelaide shows that sperm have trouble orienting themselves in zero gravity, suggesting that grav...
The production of egg and sperm cells from stem cells is one of the most fascinating and, at the same time, most complex developments in modern reproductive medicine. This field of research, which is ...
According to a new study, sperm quality is highest in the summer and lowest in the winter. Researchers from the United Kingdom, Canada, and Denmark analyzed sperm samples from 15,581 men in Denmark an...
For many years, researchers believed that the DNA in a freshly fertilized egg cell was initially a structural “blank slate”—a loose and unorganized bundle that only took on order when the embryo...
Researchers at Michigan State University have identified a molecular “switch” that increases sperm energy just before they attempt to fertilize an egg. This discovery could improve infertility tre...
Infertility is a widespread problem worldwide, affecting around one in six couples—in around half of all cases, the man plays a significant role. A particularly severe form of this is non-obstructiv...
Animals in nature age at very different rates. A female elephant can live up to 80 years, but only gives birth to a few calves during her lifetime. In contrast, a mouse lives only a few years, but can...