検索キーワード： 科学・テクノロジー

A bicycle is a fun and efficient way to get from one place to another. But have you ever wondered what parts make up a bike? Some bikes have hand lever brakes while others do not. Riders with more experience usually set their seats a bit higher than those with less experience.

What comes to mind with you think of fungi? Is it mushrooms, or perhaps mildew? Mold and yeast are fungi, too! Learn all about how fungi reproduce with spores, and how their bodies are made up of mycelium!

There have long been legends of a curse bestowed upon anyone who disturbs the final resting ground of an Egyptian pharaoh. Lore surrounding these curses claim that they may bring bad luck, illness, or even death. The legend of the curse of King Tutankhamun's tomb spread after odd circumstances and mysterious deaths seemed to follow Howard Carter's research team shortly after discovering and unsealing King Tut's tomb in 1922. It was one of the greatest archaeological discoveries of all things Egyptian—including a desire for the very wealthy to own actual mummies.

Did you know hot air balloons were dreamed up by a French boy in the 1700s? Joseph Montgolfier devoted his life to experiments that he hoped would allow him to fly. With the help of his little brother, his invention allowed humans to fly for the first time in history!

Have you ever wondered why most people can eat foods like chocolate, but dogs cannot? Or why you may get sick after drinking one too many sodas? Learn more about how some poisons are used for good. Some poisons can be used in medicines, but remember: too much of a good thing can be bad for you!

Have you ever visited the Grand Canyon? As one of the world’s seven wonders, millions of people have visited this landmark. Have you ever wondered how it was formed? Learn how the 3 "R"s- Rock, Rivers, & Erosion, have led to the formation of the Grand Canyon and the changes it undergoes in present day.

Click loves flowers! If he could have anything he wanted in his garden, he would choose flowers with a variety of different seeds, bulbs, leaves, and stems so he could enjoy all sorts of pretty colors and interesting plants! Did you know that orange blossoms turn into fruit, or that a pussy willow’s flowers are called a catkin? Follow along with Click and learn all sorts of cool flower stuff!

Do your shoes fasten with Velcro straps? Have you ever wondered where this strange invention comes from? Sometimes nature provides excellent inspiration for new solutions! Plant burs stuck in his dog's fur gave Swiss engineer George de Mestral a good idea.

Kaboom! Find out how explosions are used to demolish large buildings. Demolition experts say it's the safest way. Learn why!

Have you ever wondered how the Hoover Dam was built? Follow along as the Colorado River itself tells you its story! A lot of work went into the construction of this giant dam, but it was worth it—we now have Lake Mead and a way of converting the river’s energy into electricity!

Do you know how new fruit is made? Learn about the different parts of a fruit plant’s flower—the stigma, pistil, and stamen—and how they use pollen to make seeds in a process called pollination! The seeds grow into new flowers, which turn into fruit after they’re pollinated!

From water, to paint, to breakfast cereal, who could have guessed that all of these things have metal in them? There's metal all around! This story includes a fun experiment to pull iron out of cereal.

Tugboats are tiny boats that fill a big role. Kids will discover how tugboat push and pull larger boats, like barges, through narrow waterways. Using a thick, strong rope, the tugboat guides big cargo boats through the harbor by helping to turn them.

Long before the Everglades became one of the largest wetlands in the world and a national park, it was covered by a warm, shallow sea. Across millions of years, sea levels dropped, the land below surfaced, and the area transformed into a thriving environment for unique plants and animals like mangrove forests and the Florida panther. By the mid-1800s, most of the indigenous people living in the Everglades had been killed or forced off the land. By 1900, Florida had become the nation's twenty-seventh state and had begun draining the Everglades to create land for farms and cities.

Have you ever wondered how a river forms, which animals live near rivers, or where those rivers lead? Rivers are a vital part of life and the ecosystem. Rivers help transport water to humans and animals as well. It can also be used to create energy. Water from rivers can end up in many different places downstream!

There are so many fun things to do outside during the summer! When the flowers bloom, there is flower fun for everyone! When their hollyhock ladies and daisy chains wilt, Lily Rose and her friend learn how to preserve flowers by drying them. There's always an adventure in nature!

Follow along with this class as they explore a creek near their school in Pennsylvania! They want to learn about the water and its ecosystem, so they perform a survey to determine its quality and biota. What do you think they will find?

When on land, rivers, lakes, and oceans appear flat. With the aid of satellites, these bodies of water appear to have many designs! Explore the art of nature and how satellites detect the temperature of the many bodies of water around the globe.

Red is a red blood cell. Luke is a leukocyte, or white blood cell. Patty is a platelet. What do these three have in common? They are the workers in your blood. Listen to find out why each worker is important for your body.

How did forgetting to wash a jar make cars safer? A scientist named Édouard Bénédictus accidentally dropped a plastic-coated flask that did not break. This invention was tested and engineered to help today's windshields protect drivers better.