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You'd know a lion if you spotted one, right? But what if its whiskers and claws were all you saw? Could you still tell what it was? Solve these tri...

Old becomes new again when you create extraordinary upcycled gifts from old cups, crayons, bottle caps, and other household odds and ends. Recycle ...

Old becomes new again when you create extraordinary accessories from old zippers, buttons, clothespins, and other household odds and ends. Recycle ...

Have you ever heard of a reptile that spends most of its life in an egg? What about a reptile that has to lay its eggs on the same beach where it w...

Old becomes new again when you create extraordinary upcycled fashion projects out of old items from your closet and dresser drawers. Recycle your s...

Sweatshirt too small? Jeans too ripped? Upcycle them! Sock cat toys or cozy dog beds, one-of-a-kind denim scrunchies, snuggly flannel throw pillows...

Have you ever heard of a bird that lays its eggs on the ground instead of in a nest? What about a bird that lays eggs in other birds' nests? Young ...

Look up—into the blue and beyond. What do you see? The sky—our atmosphere—may seem empty or invisible. But is it? Using spare, lyrical language, au...

Zoom! The elevator zips from the bottom floor to the top floor of a tall building. Beep! Beep! The subway stops for people to get on and off. Using...

Have you ever heard of an invertebrate that spends its whole life inside another animal? What about a beetle that spends most of its life undergrou...

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...

Zoom! The elevator zips from the bottom floor to the top floor of a tall building. Beep! Beep! The subway stops for people to get on and off. Using...

Have you ever heard of a reptile that spends most of its life in an egg? What about a reptile that has to lay its eggs on the same beach where it w...

Fascinating facts, figures, and pictures highlight informative text about some of the most interesting and extreme jobs that use science. Young rea...

Have you ever heard of a bird that lays its eggs on the ground instead of in a nest? What about a bird that lays eggs in other birds' nests? Young ...

The field of medicine is fascinating. But some medical conditions, treatments, and experiments are almost unbelievable! Did you know workers test m...

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 echidna...

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...

In the autumn of 1912, the football team from Carlisle Indian Industrial School took the field at the U.S. Military Academy, home to the bigger, st...

Have you ever heard of a male fish that carries eggs? What about a fish that gives birth to live young? Young readers will learn about seahorses, g...

What’s inside a black hole? What are the sounds we hear from the depths of space? How did the moon form? When it comes to the realm beyond our plan...

Have you ever heard of a male fish that carries eggs? What about a fish that gives birth to live young? Young readers will learn about seahorses, g...

What’s inside a black hole? What are the sounds we hear from the depths of space? How did the moon form? When it comes to the realm beyond our plan...

Fascinating facts, figures, and pictures highlight informative text about some of the most interesting and extreme jobs that use math. Young reader...