Nonfiction Science

Las focas y los leones marinos tienen un aspecto similar y algunas veces es complicado saber cuál es cuál. Ambos mamíferos marinos nadan con aletas y pueden encontrarse en océanos alrededor del mundo. Uno tiene orejas visibles, mientras que las orejas del otro no son externas. Uno atraviesa el agua utilizando sus aletas traseras, mientras que el otro usa sus aletas frontales para nadar. Ya sobre tierra, uno rebota hacia sus alrededores, mientras que el otro puede “caminar” sobre sus aletas.

¿Sabías que hay más insectos que cualquier otro grupo de animales? La diversidad de insectos es asombrosa. ¿Qué tienen en común las hormigas con las abejas? ¿Cuál es la diferencia entre una mariposa y una polilla? ¿Cómo están relacionados los gorgojos y las mariquitas? Algunos insectos tienen un par de alas, otros tienen dos pares y hay algunos que no tienen alas. Algunos insectos, aunque no todos, tienen un caparazón duro y externo (exoesqueleto). Aprende en qué se parecen y diferencian los insectos en esta nueva entrega de la serie de Comparaciones y Contrastes.

In April 2019, the Event Horizon Telescope team unveiled the first ever image of a super massive black hole. This inspiring scientific breakthrough took years of hard work, innovative thinking, and a level of global cooperation never seen before. A multinational team of scientists, lead by Dr. Shep Doeleman and Dr. Heino Falkem, used eight of the largest telescopes from around the world to collect more than four million billion bytes of data, which was flown to teams of computer scientists and mathematicians.

With three hearts and blue blood, its gelatinous body unconstrained by jointed limbs or gravity, the octopus seems to be an alien, an inhabitant of another world. It’s baggy, boneless body sprouts eight arms covered with thousands of suckers—suckers that can taste as well as feel. The octopus also has the powers of a superhero: it can shape-shift, change color, squirt ink, pour itself through the tiniest of openings, or jet away through the sea faster than a swimmer can follow.

We often consider dogs to be our enduring sidekicks, but the truth is domestic pigs have played a role in our lives for nearly as long. Pigs are highly social and smart. They like to play. They’re inventive, crafty and belligerent - and incredibly single-minded. Ultimately, we have far more in common with these creatures than we like to admit. Here is a charming ode to one of the most common yet surprisingly intelligent animals populating our landscapes.

Come join young Santa Claus and his merry companions on a magical adventure when they discover the North Pole, meeting unforgettable characters along the way. Experience the magic that changed the world.

In the 1930s, Black singer Marian Anderson was not allowed to perform at Constitution Hall. But with help from Eleanor Roosevelt, Anderson staged an amazing concert at the Lincoln Memorial and became an activist for civil rights.

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.

At least as far back as the ancient myth of Icarus, humans longed to fly - but it wasn't until December 17, 1903, on the windy dunes of Kitty Hawk, North Carolina, that the dream finally came true. And it was all thanks to Orville and Wilbur Wright, two former bicycle mechanics who built their first toy plane - a rubber-band powered rotary - when they were just children.

Die Schule der magischen Talente. Filmfieber in der School of Talents: Jonas will unbedingt den Filmwettbewerb des Internats gewinnen. Doch seltsame Stromausfälle lassen beinahe den Premierenabend platzen. Um Licht ins Dunkel zu bringen, braucht es mehrere Talente...

Let's talk about periods, your menstrual cycle - whatever you call yours, and however you feel about it, you know that you're stuck with it for around 40 years! So you want to make the best of those years, right? This book will help you by showing you how conventional feminine sanitary products are not always the best choices for your health and the environment. Did you know that each sanitary pad uses the equivalent of four plastic bags? There are many sustainable alternatives....

The true story of a harbor seal that charmed the world paired with the teenage voice of actress Rachel Sieben will capture imaginations of all ages!

In a time when people believed flying was impossible, Joseph and Etienne Montgolfier proved that the sky wasn’t the limit. When most thought horseback was the only way to race, Bertha and Karl Benz fired up their engines. From the invention of the bicycle and the passenger steam locomotive to the first liquid-fuel propelled rocket and industrial robot, inventors across the world have redefined travel. Informative and celebratory, this collective biography tells the story of the experiments, failures, and successes of visionaries who changed the way the world moves.

In May 1869, the U.S. railroad network unified when the Central Pacific and Union Pacific railroads came together in Promontory, Utah. The Transcontinental Railroad: The Gateway to the West discusses this important milestone in the expansion of the United States and its impact on the nation, both positive and negative. This book tells how the east-west railroad played an integral role in opening western markets to the residents of the eastern United States, but it also examines how the railroad led to the demise of many American Indian groups in the West.

Do you know why goats have rectangular eyes? Or why horses sleep standing up? Or if llamas are ticklish? After listening to this book you will!

Karl is an Abyssinian ground hornbill with a special challenge. His lower bill had broken off and made eating difficult. Karl did a great job of adapting and finding new ways to eat, but he wasn't getting all the food he needed. His zookeepers at the National Zoo and friends at the Smithsonian Institute wanted to help. Could an old bird skeleton and a 3D printer give Karl a new beak? Karl's new adventure was about to begin!

What do you know about jellyfish? Beginning listeners will get their feet wet with these literacy-building introductions to ocean animals.

What do you know about starfish? Beginning listeners will get their feet wet with these literacy-building introductions to ocean animals.

Born and raised in India, Kalpana Chawla was told that she shouldn’t try to become an aeronautical engineer because it was hard for women everywhere to succeed in that field. But she persisted, getting her university degree and then immigrating to the US to keep studying. She then joined NASA and became the first Indian-born American woman to go to space. Though she was tragically killed in the Space Shuttle Columbia disaster, she continues to inspire people in India, the United States, and around the world to pursue their dreams of reaching for the stars.

Sloths spend most of their lives in trees, and until recently, scientists didn’t know very much about them. But Dr. Rebecca Cliffe was determined to discover their secrets. To find out more, she fitted sloths with special backpacks containing a device to track their activity. She learned how to climb trees in the Costa Rican jungle so she could take sloth hair samples and test their DNA. And she’s helped create sloth crossings and plant trees to ensure the sloths aren’t trapped in shrinking territories. Along the way, she earned the nickname Dr. Sloth.