A shrimp's heart is in its head.

Polar bears have black skin under their white fur.

Jupiter is so big that all the other planets could fit inside it.

Your nose can tell the difference between a huge number of smells — scientists think it could be many thousands or even more!

You blink about 15 to 20 times every minute.

Some bamboo plants can grow almost 3 feet in a single day.

The largest flower in the world, the rafflesia, can be over 3 feet wide.