Let's say you're on the football field and sand gets in your eyes. How do you know there's sand there? Of course you can't see it, but if you're a normal, healthy person, you can …
In 1965, a 17-year-old boy with the name Randy Gardner stayed awake for 264 hours. It's 11 days to see how he made it without sleep. On the second day, his eyes stopped concentrating. He lost t…
Imagine hot, gooey cookies, crunchy candies, velvety cakes and ice cream-filled waffle cones. Is your mouth watering? Craving for dessert? Why? What happens in the brain that makes it so hard to re…
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