Nonfiction Science

Years ago, when astronauts needed to leave the spacecraft, they used the manned maneuvering unit (MMU). Even though this piece of equipment is no longer used, it is still very interesting.

Did you know that a rattlesnake’s rattle is made up of segments of keratin? These segments knock against each other to produce a buzzing or rattle-like sound. Rattlesnakes use their rattles to distract their prey or to warn a predator to stay away! Each time a rattlesnake sheds its skin, it adds another segment to their rattle. Have you ever wondered why snakes stick out their tongues? They use their tongues to pick up scents. As they move their tongues back inside their mouths, a special “taste-smell” organ helps them locate their next meal.

Amphibians are cold-blooded like reptiles, have backbones like reptiles and mammals, but are very different. Amphibians do not have any hair or skin scales on their bodies. They can breathe through their skin as well as through their lungs. Most amphibians spend part of their lives in water. Frogs, toads, and salamanders are examples of amphibians.

"Boys, let us get up a club." Six restless young men raided the linens at a friend's mansion, pulled pillowcases over their heads, hopped on horses, and cavorted through the streets of Pulaski, Tennessee. The six friends named their club the Ku Klux Klan, and, all too quickly, their club grew into the self-proclaimed Invisible Empire with secret dens spread across the South. This is the story of how a secret terrorist group took root in America's democracy.

Discover the answers to these questions and many more at the Supervillain Academy: the magnificently morbid school for young bad folks-in-training. Read more about how the search for extraterrestrial life and the search for planets are linked, the exoplanets and extremophiles that can be found...

Emerging listeners can race through city streets with a fire truck, plant crops with a tractor, and travel the world with an airplane. This volume includes An Airplane's Day, A Backhoe's Day, A Bulldozer's Day, A Dump Truck's Day, A Fire Truck's Day, and A Tractor's Day

How do machines help us work? What jobs are these large vehicles built for? This series is perfect for the youngest of listeners who just can't get enough of trucks, trains, planes, and other big machines.

If you love to learn about dinosaurs, you might want to consider becoming a paleontologist. A paleontologist studies the remains of prehistoric life. They study why fossils form and why the animals and plants lived where they did.

Imagine: You are designing a society, but you don't know who you'll be within it—rich or poor, man or woman, gay or straight. What would you want that society to look like? This is the revolutionary thought experiment proposed by the twentieth century's greatest political philosopher, John...

Spiritual beings populate the stories of Scripture. Angels singing. Demons infecting. Heavenly hosts fighting . . . Ignore the armies of God and Satan and you ignore the heart of Scripture. Ever since the snake tempted Eve in Eden, we've known: there is more to this world than meets the eye. In...

This edition of Che Guevara's diary of the last year of his life describes Che's efforts to launch a guerrilla insurrection against the military government of Bolivia. It was found in his backpack when he was captured by the Bolivian Army in October 1967.

Piven and Cloward have updated their classic work on the history and function of welfare to cover the American welfare state's massive erosion during the Reagan, Bush, and Clinton years. The authors present a boldly comprehensive, brilliant new theory to explain the comparative underdevelopment of the US welfare state among advanced industrial nations. Their conceptual framework promises to shape the debate within current and future administrations as they attempt to rethink the welfare system and its role in American society.

These bunnies may look adorable, but there's more than meets the eye! In Rascally Rabbits!, meet some rabbits that cause nothing but trouble, a rescue pup who will eat anything, and a sneaky bear with a taste for treats. Listeners won't stop laughing as they hear these hilarious - and completely true! - stories.

Ernest Seton's stories reach, inside the animals he writes about in telling their stories. He gives us a greater understanding of their lives on planet earth. Adventure, comedy and sadness all intertwine to make these stories hard to put down until the last word...

Most of us would agree that there’s a clear—and even obvious—connection between the things we believe and the way we behave. But what if our actions are driven not by our conscious values and beliefs but by hidden motivations we’re not even aware of? The “hidden brain” is Shankar...

When Neil Armstrong and Buzz Aldrin stepped onto the lunar surface in July of 1969, they wore spacesuits made by Playtex: 21 layers of fabric, each with a distinct yet interrelated function, custom-sewn for them by seamstresses whose usual work was fashioning bras and girdles. This book is the story of that spacesuit. It is a story of the triumph over the military-industrial complex by the International Latex Corporation, best known by its consumer brand of "Playtex" - a victory of elegant softness over engineered hardness, of adaptation over cybernetics.

On remote Codfish Island off the southern coast of New Zealand live the last 91 kakapo parrots on earth. These trusting, flightless, and beautiful birds - the largest and most unusual parrots on earth - have suffered devastating population loss. Now, on an island refuge with the last of the species, New Zealand’s National Kakapo Recovery Team is working to restore the kakapo population. With the help of 14 humans who share a single hut and a passion for saving these odd ground-dwelling birds, the kakapo are making a comeback in New Zealand.

Based on the hit feature in National Geographic Kids magazine, we bring you Lucky Leopards, true and inspiring stories of daring animal rescues that will engage and enchant listeners of all ages. These heartwarming stories will leave kids hungry for more of the animal "awwww" factor.

Director Solomon gives a guided tour of Star City Planetarium, where he explains such things as what equipment is used in a planetarium show and what some of the different objects in the night sky are.

Scrub all you want, but you'll never get your body entirely clean. From rash causing itch mites to bacteria swimming in your stomach, meet the tiny creatures hitching a ride on your body.