In a common metaphor used to describe human fertilization, sperm cells are competitors racing to penetrate a passive egg. But as critics have noted, the description is also a 'fairy tale,' rooted in ...

Beej Sanskar is an ancient Indian concept that places fertility far earlier than ovulation charts or pregnancy tests. It centres on the quality of the seed - sperm and egg - and the physical, ...

The majority of fertilized eggs die and are resorbed into the body. ZEISS Microscopy/Flickr, CC BY-SA As an evolutionary biologist whose career has focused on how embryos develop in a wide variety of ...

Could a winter conception shape your metabolism for life? A Japanese study reveals that exposure to cold before conception may ‘pre-program’ your body to burn more calories decades later. Study: ...