検索キーワード： 科学・テクノロジー

You may have asked yourself before now: if plants are alive, why don't they eat? The answer is they do eat, but not in the same way as humans and animals. Green plants, algae, and some bacteria are able to use energy from the sun as a kind of food that enables them to live and grow. The complicated process by which this happens is called photosynthesis.

¿Quién es la criatura más hambrienta en el mar del sur? El camarón antártico puede moverse en cardúmenes y el bacalao azul puede estar cazando para cenar, pero ninguno es lo suficientemente feroz como para estar en la cima de la red trófica. Este es un cuento con sabor a "pescado" sobre quién se come a quién. Los depredadores se vuelven presas y finalmente, sólo un animal llega a la cima. Bucea dentro del rítmico texto y averigua quién podría ser.

This delightful adaptation of 'Twas the Night Before Christmas shares zookeeper and animal preparations for the upcoming "Zoo Day". But things aren't going according to plan.... The llamas won't quit spitting, the giraffes are drooling, and the zebras aren't happy at all with their stripes. Meanwhile, the zookeepers are scurrying this way and that, cleaning up poop, ringing mealtime bells, and trying to get the animals bathed. Will Zoo Day go off without a hitch?

In 2007 only 30 Amur leopards remained in the wild. Scientists knew they needed to do more to help these big cats. However, details of the leopards' wild lives in their high-altitude forest home were still a mystery. With the help of new technology and the cooperation of scientists and governments around the world, people have learned more than ever before about these rare cats. An innovative plan is under way to give Amur leopards a more secure future. Can these cats rebound from the brink before it's too late?

Did you know that the same wind that messes up your hair can be used to create energy? How exactly do you harness the wind? And what is the effect on the environment? Listen to this audiobook to find out all about wind energy.

Rocks can be made of many different minerals. By looking at rocks closely, we can tell where they were formed and what conditions they were created in. How do we know these things? And how do we tell different types of rocks apart? Learn about ways to research rocks and what they can teach us about our world.

Whiteboards, computers, and stickers. What do these things have in common? They're all tools Ms. Crawford uses in her job. Ms. Crawford is a fourth grade teacher. She invites a group of students learning about community helpers to visit her classroom. She shows them the many ways she helps her students learn. Hooray for teachers!

What do construction workers do? Some lucky kids are about to find out! They visit Mr. Moore, a construction worker who's helping to build a new school. He shows them machines that dig big holes. He explains how he follows the building plans. And he tells about different workers and how they stay safe. Hooray for construction workers!

Todos los meses hay un ciclo en el cielo. Aprende sobre los patrones de la luna y cómo cambia durante cada mes.

Los lectores principiantes aprenderán sobre los patrones básicos del Sol y la Tierra y lo que causa día y noche.

Meet Moon! She's more than just a rock - she’s Earth’s rock, her best friend she can always count on. Moon never turns her back on her friend (Literally: She's always facing Earth with the same side!). These two will stick together forever. With characteristic humor and charm, Stacy McAnulty channels the voice of Moon in this next celestial "autobiography" in the Our Universe series.

Covering essential curriculum areas such as human geography, physical geography, geology and ecology, First Earth Encyclopedia is a comprehensive introduction to the world around us and answers questions including: how does our planet work; what shapes it; and how do people use Earth's resources? Children can explore fascinating topics including where and how people live, weather, world environments, how to use maps and the way our planet is changing.

Sometimes we throw things away when we no longer want or need them. But what if they’re still good? A man named Nelson Molina wondered about this and did something about it. As a sanitation worker in New York City, Nelson saved more than forty-five thousand items from his garbage truck, including toys, musical instruments, and thingamajigs. He gave them new life and shared them with others at the Treasures in the Trash Museum.

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.

Hi, there! I'm an oak tree. You might see me everywhere, but have you ever stopped to think about how I got there? Learn more about my life cycle and how I went from a tiny little acorn to a big, beautiful tree.

¡Hola! Soy un gran tiburón blanco. No te espantes por mis dientes filosos. Comencé la vida siendo mucho más pequeñito, ¡al igual que tú! Aprende más sobre el ciclo de mi vida desde que era una cría hasta ser el mayor depredador del mar.

Air Force One keeps the U.S. president safe while flying. Learn more about the features that protect this amazing plane. Also find out how team members protect the president as he travels on Air Force One.

How can important information and valuable items be kept safe as years pass? Many of these items are stored in underground vaults, including recordings and photos from U.S. history, important documents, and more. Locks, guards, secret passwords, and technology all play a part in the protection of the items.

From hibernation to baby animals and falling leaves, life in the forest changes from season to season. Discover why snow is good for trees. Learn how wildfires help the forest grow.

Kids will learn about the 3’Rs: Reduce, Reuse, and Recycle in this upbeat audiobook about protecting our Earth. Reduce means to use less. Like turning off lights when you leave the room. Reuse means to use things over again. Like filling up a washable water bottle and using it over again. Recycle means for a used item to be remade. When you recycle plastic bottles, they can be melted down and made into new bottles or into something else. Fun music and engaging lyrics will have young scientists saying “Every Day is Earth Day!”