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Plastic was once considered the material of the future, but now it has become a nuisance that results in too much trash for the planet to handle. Learn about the durability and longevity of this 19th-century invention and hear recycling ideas from a chemist who hopes to salvage plastic's reputation.

In Colonial America, many people owned two books: a bible and Poor Richard's Almanack, one of Ben Franklin's many inventions. Franklin included calendars, tidal charts, and riddles in his famous publication.

Our sun is great at shining down light and heat on earth, but was the sun always that bright? With the help of gravity, the sun is eventually able to produce enough energy to give off light. Our sun has kept this up for four billion years and will keep shining for another five billion years!

The Bakeys company uses a simple recipe to make edible spoons in the hopes of cutting down on plastic trash.

People have always liked to know what's going on in the outside world. Today we can instantly access the news through the Internet. But how did people get the news before cell phones and TV? From ancient Rome to newspapers and telegraph machines, this story takes a brief look at how people have gotten the news throughout history.

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

The Steller's sea cow, a cousin to the manatee, was hunted to extinction just 27 years after it was discovered. Another century passed before humans realized the need to preserve endangered species. Today scientists are working to ensure its cousin, the Florida manatee, doesn’t meet the same fate.

Bees pollinate the flowers of the plants we eat. Without pollination, plants can't grow fruits and seeds. Which foods would you miss if we didn't have honeybees? So next time you're eating a meal, stop and thank the bees for their hard work!

Bees, moths, birds, and bats are all pollinators. But what are they actually doing? Why do flowers make pollen and why do they need it? Listeners will discover that without pollinators, we wouldn't have fruit or vegetables to eat, so it's up to us to protect these vital animals.

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.

Thomas Edison first developed direct current for New York City, but was challenged by Nikola Tesla, who believed his alternating current was a better solution.

Ice is nice, everyone agrees (in summer, anyway). But what is it, exactly?

How can the moon or sun seem to disappear right before our eyes? When the moon, the Earth, and the sun align just right in their orbits, they can cause a solar or lunar eclipse! Find out how light and shadow work together to trigger these cool events.

Beliefs about the shape of the earth have varied over the millennia, but the Ancient Greeks were able to observe that our planet is round and even Eratosthenes attempted to measure its size. It was not until explorers had fully charted the globe that most people were really able to comprehend its spherical shape.

Some everyday problems can be solved using a series of steps called the Engineering Design Process.

For thousands of years, people have been using the engineering design process.

At every stage in a tree's life cycle, it provides a home for many animals and insects.

Al igual que las familias de los humanos, las familias de los animales tienen diferentes formas y tamaños. Muchos padres animales en la naturaleza tienen roles inusuales y generosos en la crianza de sus hijos. Mientras que algunos padres animales puede que nunca conozcan a sus descendientes, hay algunos que protegen y dan cobijo a sus pequeños. Otros alimentan o enseñan a sus hijos. Aprendamos más sobre cada uno de estos padres salvajes y sus tareas esenciales.

When light has more energy, it creates short waves. When it has less energy, it has long waves. But only a small amount of these waves are visible to humans.

Electrons are extremely tiny charged particles that we can push around with magnets. This provides us with electricity.