Telling someone you're interested usually involves quite a few corny pick-up lines and awkward glances. Wouldn't it be easier if we, humans picked our partners the same way animals do? For example, female Galapagos tortoises hit on males that can stretch...

Telling someone you're interested usually involves quite a few corny pick-up lines and awkward glances. Wouldn't it be easier if we, humans picked our partners the same way animals do? For...