The food we eat helps our bones and muscles, skin and hair, teeth and toenails grow bigger and longer and stronger. Inside and outside, we grow and grow without even knowing it

Some dinosaurs were big. How big? As long as four school buses in a row, as heavy as sixteen elephants.

Some dinosaurs were small. How small? Read and find out

The sun brings heat, warmth, and energy to the Earth. What is the sun made of? How big is it? How far away? Read and find out

Did you know that energy comes from the food you eat? From the sun and wind? From fuel and heat?

You get energy every time you eat. You transfer energy to other things every time you play baseball. In this book, you can find out all the ways you and everyone on earth need energy to make things happen.