Risultati per "tecnologia" in Nord America

Take a trip through the Heart of Dixie! Learn about Alabama's geography, weather, history, people, and more in this book that's all about our 22nd state.

Come visit the Last Frontier! Learn about Alaska's history, weather, geography, people, and more in this book that's all about our 49th state.

Take a trip through the Pelican State! Learn about Louisiana's history, geography, weather, people, and more in this book that's all about our 18th state.

Hear the dramatic story of the rescue of the Apollo 13 astronauts.

Visit the Buckeye State! Learn about Ohio's history, geography, weather, people, and more in this book that's all about our 17th state.

In 1752, the sky in Philadelphia, Pennsylvania, darkened. A thunderstorm was coming. Benjamin Franklin was ready to perform an experiment. He wanted to show the electrical nature of lightning. His experiment was a success, but he didn’t discover electricity that day. Myths about Franklin and his experiment have been told for years. Discover what’s real and what’s fiction through infographics, primary sources, and expertly leveled text.

Thomas Edison was a famous American inventor in the late 1800s. His work with light bulbs got a lot of attention. Over time, many stories were told about this work, including that he invented the light bulb. But this isn’t true! Discover what’s real and what’s fiction.

Stephen Hawking was one of the greatest minds of our time. His theories about the universe have changed the way we think about black holes and the Big Bang. Learn more about the physicist on wheels who traveled the world.

Today, everyone is familiar with Neil Armstrong's famous words as he first set foot on the moon: "one small step for man; one giant leap for mankind." But America's journey to the moon was anything but simple. In 1957, the Soviet Union launched Sputnik, the world's first satellite, into orbit; later that year, America's first attempt was such a failure that the media nicknamed it "Kaputnik." Still, we didn't give up. With each failure, we gleaned valuable information about what went wrong, and how to avoid it in the future. So we tried again. And again. And each time we failed, we failed a little bit better.

Following the events of September 11, 2001, the governor of New York gave the navy a steel beam that was once inside one of the World Trade Towers. Seven and a Half Tons of Steel tells the story of what the navy did with it.

On April 11, 1970, astronauts Jim Lovell, Fred Haise, and Jack Swigert were launched into space as the crew of Apollo 13. Their mission, like the missions of Apollo 11 and Apollo 12, was to explore the lunar surface. But that mission was never completed. As they began the procedure for landing on the Moon, the spacecraft was rocked by a violent explosion. Oxygen began pouring out of the Service Module, and the spacecraft began to lose power. Jim Lovell radioed Mission Control with the now-famous words, "Houston, we have a problem."

Travel to Mexico. Find out the facts about this country in North America.

In mid-1860s, two railroad companies had a huge job in front of them: building the transcontinental railroad. The railroad would run from east to west across the United States. As the grueling work began, there were many choices to make. Now, the choices are yours.

Although Orville and Wilbur Wright are celebrated today as heroes for their revolutionary contributions to science and engineering - they are acknowledged as the first men to successfully achieve powered, piloted flight - their success was hard-earned. In fact, it took the self-taught engineers years of work and dozens of crashes before they managed a single 12-second flight! In this first installment of the brand new Epic Fails series, Ben Thompson and Erik Slader take listeners through the Wright brothers' many mishaps and misadventures as they paved the way for modern aviation.

Sure, almost all kids know Benjamin Franklin as one of America's Founding Fathers, a man with a hand in both the Declaration of Independence and the US Constitution. And they may even have some vague idea that he once flew a kite during a lightning storm. What Kathleen Krull sets out to do in this very different biography is show Ben Franklin as the natural philosopher (the term for scientists back in the 1700s), whose experiments led to important discoveries about the nature of electricity - including his famous demonstration that electricity and lightning were one and the same.

Have you ever looked into the night sky and wished that you could walk on the Moon? Find about what it is like from the astronauts that were first to do it! Learn about how Neil Armstrong, Edwin Aldrin, and Michael Collins traveled into space and created history in 1969, and what it was like to take those famous first steps that made “one giant leap for mankind."

When Thomas Edison was a boy, he loved performing experiments and coming up with new inventions. His curiosity sometimes got him in trouble, though, like when he accidentally burned down his dad’s barn! By the time he turned 12, he had found ways to make a living by learning how to print newspapers and send telegraphs in Detroit, Michigan. Imagine what he did as an adult!

Formaldehyde, borax, salicylic acid. Today these chemicals are used in embalming fluids, cleaning supplies, and acne medications. But just over a hundred years ago, they were routinely added to all kinds of food by unregulated and unethical companies. Noted science and history writer Gail Jarrow introduces listeners to the relentless work of U.S. government chemist Dr. Harvey Washington Wiley, who mounted a thirty-year campaign to protect consumers from harmful food and drugs. As part of his research, he tested food additives by serving them to a squad of volunteers—the poison eaters.

In January 1776, George Washington had a problem: the British army controlled the city of Boston. The colonial army needed to force the British to leave. But how? Washington had a solution: ask his engineer Rufus Putnam to solve the problem. They needed to take control of the high ground, Dorchester Heights, just south of Boston. They could place cannons there to bombard the British army.

Explore the Garden State! Learn about New Jersey's history, geography, weather, people, and more in this book that's all about our third state.