Resultados para "James" en Ciencia y tecnología

Have you ever wondered how a penny or dime is made? Coins are made from metal in factories called mints. First, an artist draws a picture of the coin, next clay is used to make a mold made from plastic. Then a machine engraves and designs a piece of metal–these metal pieces will be used to make stamps called dies. In the United States, there are only four factories–can you guess where?

This audiobook reveals the secret lives of salt marshes. Along the coasts, where ocean tides mix salt water with fresh water, nature has created salt marshes - soggy places full of natural wonders. For years, salt marshes were maligned, drained, or filled in. Now salt marshes are valued as the home of fascinating wildlife, including more than twenty different species of birds. Ornithologist and photographer Doug Wechsler takes the reader on a down-and-muddy tour of the year-round activity in these wonderlands.

When disasters strike, people aren’t the only ones in danger. Tornadoes, hurricanes, fires, and more also threaten the lives of animals. In this narrative nonfiction series, listeners meet heroes who risk their lives to save animals—from cats and dogs to pelicans and pigs! As listeners relive the dramatic events surrounding famous disasters such as Hurricane Katrina and the Deepwater Horizon oil spill, they will witness the courageous rescue attempts that saved the lives of thousands of innocent pets and wild animal. This volume includes Water Everywhere and Wildfire Escape.

In this narrative nonfiction series, listeners meet heroes who risk their lives to save animals—from cats and dogs to pelicans and pigs! This volume includes Panda-Monium and Vanished in a Hurricane.

When disasters strike, people aren’t the only ones in danger. Tornadoes, hurricanes, fires, and more also threaten the lives of animals. In this narrative nonfiction series, listeners meet heroes who risk their lives to save animals—from cats and dogs to pelicans and pigs! As listeners relive the dramatic events surrounding famous disasters such as Hurricane Katrina and the Deepwater Horizon oil spill, they will witness the courageous rescue attempts that saved the lives of thousands of innocent pets and wild animals. This volume includes Deepwater Disaster and Mason Versus the Tornado.

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

Running, biking, walking and waving. Motion is all around us. But what is it? How does motion work?

Crash, bark, boom! Sound is all around us. But what is it? How does sound work?

Did you know that Pluto has mountains, glaciers, and even blue skies? In July 2015, a spacecraft called New Horizons finally reached Pluto - almost 10 years after it had launched! The spacecraft flew by Pluto to take the first close-up photos of the dwarf planet. When it began sending those photos back to Earth, scientists were amazed by what they saw. Pluto was more fascinating than scientists ever imagined!

In the Black Hills of South Dakota lie eleven thousand acres of breathtaking rangeland and rimrock, canyons and pastures - home to more than three hundred wild mustangs. This preserve was the vision of one man - Dayton Hyde - who conceived of a place where wild horses could live and die in freedom and dignity.

Black holes are one of the greatest mysteries of outer space. No visible light can escape the strong gravity of a black hole. This makes black holes invisible - and very difficult to study. But scientists make new discoveries and develop new theories about these mysterious objects every day. In 2015, astronomers were able to finally confirm a theory that Einstein had developed 100 years earlier! And in 2016, scientists found that black holes may form in a different way than they ever thought possible.