Why Did We Evolve to Be Depressed?

It might sound counterintuitive, but depression might well have served an important evolutionary function — and although it almost certainly doesn’t feel like it, it could still be helping us now

Why Do Men Get So Freaked Out by Period Blood?

That used tampon isn’t going to hurt you, despite what the ancient blood-aversion buried deep in your psyche is telling you

Why Eating or Drinking Something Unexpected Is So Damn Awful

You can blame evolution for your overdramatic reaction when something that was meant to be squishy goes crunch (or, arguably worse, vice versa)

Why Thinking About Our Sexy Parents Doing Sex Stuff Makes Us Want to Vomit

‘It’s difficult to imagine mom lying on the bed or the floor with her legs spread, and dad penetrating her’