It all comes down to vocal cords and hormones. Here's why girls' voices are usually higher than boys' voices.
Scientists think a terrible event killed most of the dinosaurs off. But some remain—and they fly.
It could be your body's way of saying "watch out!" Here is the reason why sour things make you pucker.
It’s not actually your feet that stink. It's actually the bacteria that lives on your feet that smells.
Your movements and your feelings can give your heart a little workout. Here is why your heart beats faster sometimes.