Pseudo-insomniacs are rare cases that complicate the classical rules of sleep science. While they perceive themselves to be awake all night, traditional lab tests show nothing other than completely normal sleep. ‘Pseudo-insomniacs’ have made scientists take a closer look at the sleeping brain, but the science of sleep is still far from being completely understood.
We've all heard of the Venus flytrap, but the plant kingdom contains many more wonderful examples of meat-eating species. Some plants have been known to feed on insects, frogs, and even birds and small mammals. But if plants are so good at getting energy from the sun, why would these eating habits ever have evolved in the first place?