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why do toucans have such big beaks

Toucans have large beaks in order to regulate their body temperature. ... read more

people who study animals

There are many things about animals that can be studied. We study their anatomy, their behavior, and how they live in the wild. We also learn more about our own bodies, behavior, and development when we look at other animals. We study how animal life can have an affect on humans and how humans can hav... read more

nuclear energy

The protons and neutrons of an atom release nuclear energy when they break apart. Every atom contains a lot of energy. The forces that hold the atom together are the strongest forces that scientists know of. ... read more

stars

On a clear night, you can see thousands of stars shining in the sky. From Earth, they seem to be small points of light. Yet many of them are larger than our Sun. There are far more stars in space than you can see with the naked eye. There are so many that you could never count them all. Our Sun is a m... read more

the human body organs and systems

Your body is like a complex machine. Many parts make up your body and work to keep you going. Some parts, like your eyes and hands, are easy to see. Some parts, like your vocal cords, hide inside your body. When you hum, the vibrations you feel are your vocal cords at work. Some parts of the body are ... read more