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Demi Lovato rose to stardom as a child actor, and went on to fame as a talented singer and performer. But what is this high-profile star like offstage? High-interest details and bold photos of Demi's fascinating life will enthrall reluctant and...

The term artificial intelligence was introduced in 1956. Today's AI is accomplishing the original goal of mirroring human thought processes; it's designed to independently adapt to and learn from new data. AI involves programming machines and robots to...

As the planet's human population explodes, so does the demand for water. About one out of every nine people in the world does not have access to safe drinking water, while one out of every five--almost 1.5 billion humans--lives in a region where water...

Gray wolves and moose go head-to-head in a fight for survival. Gray wolves are one of the world's most successful predators. But moose have deadly kicks to defend themselves. Learn more about each animal's strengths and weaknesses. Who will win in this...

Polar bears and ringed seals know how to survive in the Arctic, but which would win in a fight? Polar bears wait patiently for their prey and strike fast. Seals are sneaky and dive deep underwater to escape hungry predators. Learn more about the...

Lions and zebras go face-to-face in a battle between predator and prey. Lions are strong and powerful killers. Zebras can deliver deadly kicks. Explore how these remarkable animals attack, and uncover their greatest weaknesses. Who will be the ultimate...

In North America's biggest desert, red-tailed hawks and western diamondback rattlesnakes are the top predators. Red-tailed hawks can soar high in the sky and dive too fast for most prey to see. Rattlesnakes strike quickly with a strong venomous bite...

Great white sharks and dolphins face off in a fight. Sharks are skilled hunters, but bottlenose dolphins are one of the ocean's smartest creatures. Discover the size, speed, attacks, and defenses of these amazing animals. Who will win in this...

Hippos and crocodiles are both fierce animals of the Nile River. Nile Crocodiles are faster than hippos in the water, but they are slower on land. And while hippos weigh more than crocodiles, they have a weaker bite. Which animal would win in a fight?...

Oxygen is essential to life on Earth. It's produced through photosynthesis and moves through human bodies, water, and Earth's atmosphere. How exactly does that work? Through accessible language and full-color diagrams and photographs, this book explains...

What happens in space has an influence on our lives. As Earth moves around the sun, the seasons on Earth change. The movement of the moon affects the tides in Earth's oceans. In this book, readers explore the cycles in the space that most affect us and...

What would our world be like without magnets? Computers, radios, phones, and TVs wouldn't work correctly. And many other modern machines wouldn't exist. With this basic introduction to magnets, young readers will learn how magnets work and how useful...

What would happen if gravity didn't exist? People and objects would float into space! With this basic introduction to gravity, young readers will discover how gravity works and how it affects everything in our world and beyond.

Take a look out the window. What do you see? People, cars, bikes, birds, and more are all on the move. With this basic introduction to motion, young readers will discover the three laws of motion, what they mean, and how they affect our lives every day.

How do you get something to move? You use force to move it with a push or a pull. With this basic introduction to forces, young readers will learn about physical forces and how they are at work in our world every day.

The Sunrise Movement is a youth-led organization fighting the climate crisis and building a fairer future. Climate change is harming our planet and could cause food and water scarcity, severe weather, and more. The Sunrise Movement is working to stop...

Climate change is hurting the planet. It creates problems for people, plants, and animals. Protecting the environment is important for our future. Climate activists work to get laws passed. They share information about how to help. And they speak up to...

Rising temperatures around the globe put animals at risk. They lose their homes. They lose food and water sources. By 2070, as many as one-third of known species could be extinct.Time is running out. But there are actions humans can take to fight climate...

Fossil fuels heat our homes. They power cars, trucks, and planes. But every use of these fuels adds to rising temperatures on Earth. And they are nonrenewable. Someday, they will run out.Since the 1800s, people have studied the effects of burning fossil...

Earth is nearly 70 percent water. Most of this water is frozen in the form of glaciers. As our planet warms, glaciers are melting faster than usual. Sea levels rise, and water washes over coastal areas. Homes are destroyed. Habitats are lost.Scientists...

Forests create the air we need to breathe. They provide shade and homes for people and animals. They give us wood for fuel and for building materials. And they are beautiful spaces! But deforestation means humans are destroying more forests every day.As...

The Sunrise Movement is a youth-led organization fighting the climate crisis and building a fairer future. Climate change is harming our planet and could cause food and water scarcity, severe weather, and more. The Sunrise Movement is working to stop...

Pancake ice, floebergs, glaciers, icicles . . . cold temperatures create an astonishing variety of ice forms! From Maria Gianferrari, award-winning author of Play Like an Animal!, comes a beautiful collaboration between verse and science. Brief poems...

Everyone has a moral compass that guides them in determining good from bad or right from wrong. Those judgments can sometimes be flawed, however, a result of individuals being shaped by the people, laws, ideas, and environment around them. This...

Everyone has a moral compass that guides them in determining good from bad or right from wrong. Those judgments can sometimes be flawed, however, a result of individuals being shaped by the people, laws, ideas, and environment around them. This...

Understanding climate change is increasingly important as Earth gets warmer. Wind is another side effect of Earth's changing climate and atmosphere that can be harmful. It affects crops, people's homes, and animal habitats. In this book, young readers...

There's no question that storms like hurricanes have gotten stronger around the world in recent years. Many places have more rain at other times too. An increasingly wet climate in some places is yet another side effect of climate change. In this...

When people talk about global warming, they mean climate change. Scientists predict that Earth will continue to get warmer if people don't make serious changes to protect Earth. Reducing the use of fossil fuels is one way that young readers are...

Swamps, marshes, and wetlands are humid, wet, and full of surprising danger. However, people have lived and thrived in these places for centuries. This book presents to young readers the challenges and rewards of living in a wet environment and focuses...

Swamps, marshes, and wetlands are humid, wet, and full of surprising danger. However, people have lived and thrived in these places for centuries. This book presents to young readers the challenges and rewards of living in a wet environment and focuses...

The rain forest is a lush habitat that many unique plants and animals call home. Millions of people also live in the rain forest. In Australia and across the continents of Africa and South America, people have adapted over time and created their own...

The rain forest is a lush habitat that many unique plants and animals call home. Millions of people also live in the rain forest. In Australia and across the continents of Africa and South America, people have adapted over time and created their own...

Life in the desert is challenging for many species. Lack of water and extreme temperatures make it hard to survive. Despite this, people have survived and thrived in the desert for thousands of years. This book describes deserts around the world and...

Life in the desert is challenging for many species. Lack of water and extreme temperatures make it hard to survive. Despite this, people have survived and thrived in the desert for thousands of years. This book describes deserts around the world and...

Journey north to the cold tundra and discover how animals and plants in the Arctic survive in an interconnected food web in this illustrated narrative nonfiction. How do animals and plants survive in the coldest ecosystem on earth? Easy--it's not always...

Take an illustrated narrative nonfiction journey to South America and discover how animals and plants in the Amazon Rainforest survive in an interconnected food web. Hot and humid, the Amazon is home to a diverse range of animals and plants. Toucans,...

Take an illustrated narrative nonfiction journey to a North American prairie and discover how animals and plants in a grassland survive in an interconnected food web. The wide-open prairie is home to many grass-grazing herbivores, including the prairie...

Why does everyone want to go to Mars and not Venus? Spark early readers' natural curiosity about planets with this inquiry-based nonfiction approach to Venus. Venus is sometimes called Earth's twin planet - its evil twin. Did you know Venus is so hot...

How did Uranus get its silly name, anyway? Spark early readers' natural curiosity about planets with this inquiry-based nonfiction approach to Uranus. Poor Uranus - always the butt of jokes. Did you know that gas in its atmosphere makes the planet smell...

What's with those huge rings? Spark early readers' natural curiosity about planets with this inquiry-based nonfiction approach to Saturn. Everyone loves Saturn's amazing rings. But did you know the planet has a storm at its north pole shaped like a giant...