Roundworms don't actually need to mate to reproduce. When they do mate, though, the consequences can be deadly.
Scientists believe human brain development is the result of genetic mutations that occurred millions of years ago.
Without cracking eggs open, how can you tell which egg is cooked and which is raw?
Were the eggs we buy in the supermarket once embryos?
Were you ever curious how does an egg white turn into an opaque gel?
Ever wonder what a light bulb and a egg have in common?
Did you know that crocodiles call from inside their eggs with a 'cheep' sound shortly before they hatch?
Have you heard of the cicada killer wasp? It's a cool name, but the bug itself is quite cruel.
According to a study, the longer it takes a woman to get pregnant, the greater her chances of having a boy.
The female wood mouse has multiple mates, so the sperm of this wood mouse may be competing with sperm from other males.