One lucky guy seems to be experiencing the world’s most colorful sex. His rare form of synesthesia is triggered by orgasm, causing him to briefly see the world in hues of pink. And as a teenager, bouts of pain caused ...

Some spiders might be even more devious predators than we realized. New research published Monday finds that certain spiders can force trapped fireflies to emit light signals that bait other male fireflies looking for love. It’s an amazing finding, but ...