But science is beginning to learn that various chemicals in the female reproductive system can facilitate – or sabotage – that sperm’s chance for victory. And it appears to happen at an early stage in ...

The gut-brain axis describes the two-way communication between the neurons that make up the central nervous system, which includes the brain, and the so-called peripheral nervous system, which ...

Some animals can produce offspring from an unfertilized egg in an asexual reproduction process known as parthogenesis. When this is the standard process for a species it's said to be 'obligate' and ...

Mercedes Burns has previously received funding from the National Science Foundation. An Asian water dragon hatched from an egg at the Smithsonian National Zoo, and her keepers were shocked. Why? Her ...

During mammalian reproduction, millions of sperm undertake a journey that only one will finish. This journey to fertilization has been commonly viewed as a race: a sea of sperm competing to get to the ...