For many species, producing an embryo is a bit of a contest between males and females. Males want as many offspring as possible and want the females to devote as many resources as possible to each of ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. DNA tests can tell people where in the world their ancestors came from, and if they're at risk of ...

Very interesting! I know this won't be ready for humans for many years, maybe even a decade or two, but still extremely cool. It's not just the reproductive options this makes possible, but what it is ...