How do octopuses mate in the dark? A new study shows how the hectocotylus arm uses progesterone receptors to "taste" for a mate.

We all know stories about humans falling in love with machines – and by that I don't mean spending more time playing Pokopia ...

Ghost always knew when it was showtime. Stretching her eight arms across the tank, the octopus would glide midwater almost as if she were dancing, leaving admirers on the other side of the glass ...