LifeExtremely rare black penguin spotted in Antarctica For just the second time, biologists have spotted a gentoo penguin with melanism, a genetic condition that results in unusually dark feathers News
LifeSome sea snakes have re-evolved the ability to see more colours Most snakes can see a limited range of colours, but the blue-banded sea snake has regained genes lost millions of years ago that may let them see ultraviolet and blue light News