Twenty five million years ago, a copied chunk of the genome of one fungus jumped intact to the genome of another, thus rewriting heredity's rules as we know them.
Scientists discovered the fossilized remains of a species of penguin that lived 36 million years ago - and it turns out their feathers weren't black and white.
We're taking water out faster than it's being replenished, says hydrologist Marc Bierkens. Read more about underground water and how fast it's draining.