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Why does a magnet pick up a paper clip but not a leaf or a penny? How can the whole world be a magnet? Follow the step-by-step instructions about how to make your own magnet, and then find out for yourself what makes a magnet!

What does your skeleton do?Your skeleton helps you leap, somersault, and touch your toes?without it, you would be as floppy as a beanbag! There are over 200 bones living and growing inside you that make up your skeleton. There are also ligaments and joints that hold your bones together, and cartilage in your bendable parts like your ears and your nose. Learn all about what a skeleton can do?because this isn't some make-believe Halloween skeleton, this is the real skeleton inside you.

What do you and a tuna have in common?You and the tuna are both parts of a food chain. This food chain begins with green plants and ends with you at the top. Every link in a food chain is important, because each living thing depends on others for survival.Patricia Lauber and Holly Keller will inspire you to draw your own food chains.

Winner of the American Association for the Advancement of Science/Subaru Science Books & Films Prize for Outstanding Science Series

An addition to a popular science series explores how the cycle of life is enriched by the way worms live, eat, and work in the underground environment.

Winner of the American Association for the Advancement of Science/Subaru Science Books & Films Prize for Outstanding Science SeriesHow are you feeling?Most of the time you feel fine, but sometimes you get sick. Sometimes a germ catches up with you.Germs are all around you, but they are too small for you to see. Many germs are harmless, but two kinds, viruses and bacteria, can make you sick. Read and find out about germs, how they can make you sick, and how your body works to fight them off and keep you healthy.