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A person needs to get a hospital quick! What vehicle can get them there fast? An ambulance! Ambulances carry the equipment needed to help people in an emergency. Young readers will find out about ambulances, their main parts, and how these important...

Every four years, the world celebrates one of the most exciting contributions of the Ancient Greeks: the Olympic Games. That, of course, is not all this great civilization left behind. From theater to democracy, discover how the Greeks' ancient...

The Ancient Egyptians are famous for their pyramids and mummies, but how do these ancient items impact your life today? From hieroglyphs evolving into emojis and kohl around the eyes evolving into eye liner and mascara, the inventions and discoveries of...

From pasta to paper, the inventions of the Ancient Chinese remain part of everyday life in our modern world. Learn how items like wheelbarrows, the first toothbrushes, and early earthquake detectors have evolved into devices we know today and discover...

Why should you care about climate change? Weather affects your everyday life and climate change can have major impacts. Discover how scientists study climate change, what current research shows, and what you can do to reverse its effects.

Birds chirp. A dog barks. Thunder claps. We hear sounds all around us. But how? Sound waves travel through the air, but we don't see them. With engaging, at-level text and colorful images, readers will learn about sound waves and how we use them every...

You see your shadow outside on a sunny day. A rainbow appears in the sky after a storm. Light waves are all around us, even when it's dark. With engaging, at-level text and colorful images, readers will learn about light waves and how we use them every...

The sun is out. The temperature is hot. And Sasha has everything packed and ready for a full day of swimming! But Mr. Sloth is taking for-eh-ver! Sasha does NOT like to wait. However, her best friend is never in a hurry. Will Sasha learn to be patient,...

Lava shoots into the air, then bubbles down mountains, flattening, burning, and boiling everything in its path. The destructive forces of volcanoes are terrifying and well-known. But what about their other forces? Volcanoes can spur new growth of plants...

Have you ever heard of a mammal that lays eggs? What about a mammal that can give birth to 50 babies at once? Young readers learn all about echidnas, Tasmanian devils, and other mammals with unusual life cycles.

Have you ever heard of a frog that freezes solid in winter? What about a toad that carries its eggs on its back? Young readers will learn all about wood frogs, suriname toads, and other amphibians with unusual life cycles.

Why do we yawn? Are left-handed people more creative? Why do we have fingerprints? When it comes to our bodies, there are a whole lot of questions we’re still trying to answer. Get ready to explore the unknown and discover how scientists are working to...