Jellyfish have been around for over 500 million years. But is sleep that ancient?
Why don’t pandas have more sex?
It’s true. Male pandas have very teensy winkies so minute that over the years many humans trained in the ways of sexing bears have mistaken boy pandas for girl pandas. Female pandas have a reproductive window so fleeting – just
Extinct Galapagos tortoise has just been hiding
A species of Galapagos tortoise – thought to be extinct for over 150 years – may, in fact, be alive and well. This finding – made by geneticists at Yale University – is particularly surprising when you consider that this