Showing titles in Earth Sciences

Have you ever wondered what it would be like to stand next to a real dinosaur? Millions of years ago, Dinosaurs ruled the earth and left their fossils behind for us to find all over the world. These fossils help archaeologists and paleontologists learn about what dinosaurs may have looked like. Some were really big and some were really small. In this story, you will learn all of the different shapes & sizes of your favorite dinosaurs before they went extinct. How will you measure up next to your favorite dinosaur?

Have you ever wondered why it gets dark at night? Listen to learn about how the Earth’s spinning changes day into night and why some days are longer than others.

Did you know that Hawaii is still being built, even today? Heidi learns all about how Kilauea, the most active volcano in the world, erupts and spills more lava every day, making the island grow! She also gets to visit Mauna Loa, the biggest mountain in the world. What do you think it might be like to visit?

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.

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.

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!

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?

Deep underground, unseen forces are at play to move the continents around our globe.

How is lightning created? And what is thunder? What kind of weather creates the most lightning? This science story shows how lightning is like the spark from static electricity, but much bigger.

Not all forest fires are bad. Controlled burns actually help keep the forest healthy, clear the way for new vegetation, and act as a pest control.

Every visitor of Yosemite National Park in California should say "thank you" to one man: John Muir.

Stretching across the Great Plains, Tornado Alley has the perfect weather conditions for forming tornadoes.

Weather affects us almost every day. When it's raining, we can't play outside. Sometimes weather is even more important. Sometimes weather shapes history.

What made the ice age so cold? This Q & A defines the different ice ages of the Earth and when they come about.

What do weather forecasters really know about the weather? An interview with a real meteorologist, Ken Heideman, tells listeners what they want to know!

Despite a mountain of evidence, some people still don't believe that climate change is occurring. Why is that? Find out in this insightful Q & A.

Every single rock has a secret story to tell about what the earth was like long ago.

Yo says his toy animal, polar bear, wants to know why the polar regions stay cold! Yo’s father shows him a globe of the earth! Did you know the sun doesn’t shine on the North and South Poles strong enough to keep it warm? Yo learns that because the earth is tilted, sunlight shines brightly in the middle of the earth, and dimly on the Poles. What will Yo learn when he sees a flashlight?

Have you ever had an electrical power outage at home? In 2003, the largest blackout in United States history left millions of people without power for days! Learn how power generation plants are connected to the power grid that distributes electricity to regions of the country and to homes. What causes power outages? How does losing power affect daily life? What can people do to conserve energy?

What do you use your teeth for? Just like us, animals use their teeth for lots of different things in order to survive! Learn how animal teeth differ from humans and how they are special to each kind of animal, depending on what they eat! See all the different kinds of teeth that animals can have all over the world. Who do you think has the scariest teeth?