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 ...

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 ...

Long before pregnancy begins, your body is already shaping the conditions for conception. Hormones are signalling, eggs are maturing over months, sperm are regenerating every few weeks, and your ...

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: ...

ANY biologically aware parent who has started talking about the birds and the bees will have realised halfway through that what they are really discussing is flowers. Bees carry pollen grains from one ...