Showing titles in Biology

Whales whistle, fireflies glow, and skunks spray—that’s how they communicate! Find out how mammals, reptiles, birds, and other animals send messages and signals to stay safe, make friends, and care for their young. Accessible and fun K–3 level information reveals the animal world to young listeners and researchers in this Pebble Explore title from the Animal Societies series.

A baby kangaroo lives in its mother’s pouch. A zebra group is called a dazzle. A mother octopus has 50,000 babies! Find out how animal families care for their young, keep one another safe, and share duties. Accessible and fun K–3 level information reveals the animal world to young listeners and researchers in this Pebble Explore title from the Animal Societies series.

The mountain habitat provides shelter and water for cunning predators, and the wolf and the golden eagle thrive there. The wolf can travel 50 miles a day to find prey. The striking force of a golden eagle’s talons can be compared to that of a bullet. But which animal is the fiercest of the ecosystem? Compare and contrast each animal’s features and skills before you declare the winning predator.

You see a fin poke out of the water. It’s a big gray animal with a friendly face. It looks like a dolphin, but is it a porpoise? Dolphins and porpoises are similar, but they have some important differences. Find out how their fins, mouths, teeth, and behaviors can all help you tell these two animal look-alikes apart.

The massive grassy African savanna is filled with the hunting activity of predators and their prey. The stamina of the hyena allows the animal to hunt its prey until it is too tired to fight. The lion’s strength makes its attacks swift and severe. But which animal is the fiercest of the ecosystem? Compare and contrast each animal’s features and skills before you declare the winning predator.

With big eyes and ears and colorful bodies, a lot of creatures in nature look very cute. But don’t be fooled by their adorable appearance. When provoked, these animals can easily injure or kill a person. Their defense mechanisms like poison and sharp teeth and claws can turn them from darling to deadly. Get ready to discover some of the world’s cutest killers.

An animal that looks like a turtle munches on some grass. It has scales and a hard shell. But is it a turtle or a tortoise? Turtles and tortoises are similar, but they have some important differences. Find out how their legs, feet, shells, and behaviors can all help you tell these two animal look-alikes apart.

The dark floor and muddy rivers of the rain forest are perfect for hunting, and the jaguar and crocodile both stalk their prey with ease. But which animal is the fiercest of the ecosystem? Does the jaguar's speed give it an edge? Or does the crocodile's strength make it superior? Compare and contrast each animal’s features and skills before you declare the winning predator.

Two beady eyes peek out of the water. Is it a crocodile or an alligator? They may look similar, but these two reptiles have many differences, including where they live and the shape of their snout. Let’s find out what fearsome creature is really lurking below the water and explore their differences.

The world is full of furry, cuddly-looking animals. They often seem harmless at first glance. But don’t try to snuggle with these fuzzy creatures. Many of them can be very dangerous. Some have razor-sharp claws and teeth. Others are incredibly strong. Still others are poisonous or carry deadly diseases. Prepare to meet some of the world’s cuddliest killers.

Flutter, flutter! What did you just see? Was it a butterfly or a moth? Butterflies and moths are similar, but they have some important differences. Find out how their colors, antennae, bodies, and behaviors can all help you tell these two animal look-alikes apart.

Space isn't just the final frontier—it's big business! From exploration to space vacations, learn how private businesses are transforming the future of space travel and exploration.

Probes can explore the depths of space in ways that would kill human beings. The information they provide can spur countless innovations here on Earth. Learn how probes work and the exciting possibilities that their discoveries may inspire.

Hi, there! I'm a sea turtle. I spend most of my days surfing in warm waters, but I started life much smaller! Learn more about my life cycle and how I went from a tiny little egg to a hatchling to an adult.

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 solve the mysteries of the human body.

Follow the adventures of Max Axiom as he explains the science behind photosynthesis.

Over the last 400 years, telescope technology has come a long way. From dying stars to burping black holes, take a look at the most exciting discoveries in deep space.

As humans continue to make amazing discoveries in outer space, we also face a unique challenge—living in an environment that we're not meant to live in. Find out how long-term exposure to outer space affects the human body and what scientists are doing to combat it.

NASA's Orion spacecraft is pushing the limits of space travel and exploration like never before. The ultimate goal is a mission to Mars! Learn about the challenges that scientists, engineers, and astronauts must overcome to make this dream a reality.

The moon is more than a giant rock orbiting Earth—it could become a gateway into deeper space! Find out how NASA and other international and commercial agencies are working together to explore and build on the moon.