Brainless upside-down jellyfish, like this one in its natural habitat near Eilat, Israel, spend about one-third of their time asleep. Gil Koplovitch Why do animals—including humans—sleep? This ...

Our brains are much more active when we daydream than previously thought. Activity in numerous brain regions increases when our minds wander, according to new research. Psychologists found that brain ...

Reading books has several health benefits. These include strengthening your brain, increasing your ability to empathize, reducing stress, and building your vocabulary. Share on Pinterest ...