The Age of Dinosaurs began about 250 million years ago. In the beginning they were quite small but over time they evolved into the varied and fascinating creatures that captivate our imaginations today. What we know about dinosaurs is evolving, too! We've learned that some dinosaurs were good parents, that dinosaurs could grow new teeth when old ones fell out, and that most dinosaurs walked on two legs. We've even discovered that birds are modern relatives of dinosaurs!

    Hear the stories about the gold-seeking "forty-niners!" With black-and white illustrations and sixteen pages of photos, a nugget from history is brought to life!

    In later years, the island was deserted, the buildings decaying. Ellis Island was not restored until the 1980s, when Americans from all over the country donated more than $150 million. It opened to the public once again in 1990 as a museum. Learn more about America's history, and perhaps even your own, through the story of one of the most popular landmarks in the country.

    The contests were held every four years and winning athletes brought honor and respect to their homelands.The tradition of the Olympic Games faded over time until 1896, when they were brought back to life. The first modern Olympics were held in Athens, Greece, with over two hundred athletes from fourteen countries. Today, nearly three thousand years after the first Games, the Summer Olympics attract one hundred thousand top athletes from over two hundred countries. Billions of fans around the world cheer on their national teams to bring back the gold.

    Yet because of the spectacular colors in the rock layers and fascinating formations of boulders, buttes, and mesas, it is known as one of the Seven Natural Wonders of the World. Starting with a brief overview of how national parks came into being, this book covers all aspects of the canyon--how it formed, which early native people lived there, and what varied wildlife can be found there now. A history of the canyon's end-to-end exploration in the late 1860s and how the Grand Canyon became such a popular vacation spot (5 million tourists visit every year) round out this informative, easy-to-read account.

    What exactly is going on there? Is Area 51 a top secret military base that lies in the middle of the barren Nevada desert? Or could it actually be a facility for examining aliens and their spaceships? People can't drive anywhere close to it; the US government rarely acknowledges its existence; and until recently, the airspace overhead was restricted! Conspiracy theories abound about what goes on at Area 51, especially since 1947 when strange objects were found in the middle of a field in Roswell, New Mexico. Author Paula K. Manzanero explains why Area 51 was established and reveals the mystery behind those unidentified flying objects in the sky. Check out this book and decide what you believe.

    Elected four times, he spent thirteen years in the White House. How he led the country through tremendously difficult problems, much like the ones facing America today, makes for a timely and engrossing biography.

    To go by sea involved a long journey around South America and north along the Pacific Coast. But then, in a dangerous and amazing feat of engineering, a 48-mile-long channel was dug through Panama, creating the world’s most famous shortcut: the Panama Canal!

     The National Aeronautics and Space Administration, better known as NASA, began in 1958. With its creation, the United States hoped to ensure it won the space race against the Soviet Union. Author Sarah Fabiny describes the origins of NASA, the launching of the Apollo program that landed the first human on the moon, and the many missions and discoveries that have taken place since then. NASA has a rich history and still plays an important role in uncovering the mysteries of the universe. Readers are sure to get sucked into this book.

    These massive tombs were built thousands of years ago, and still no one knows exactly how the ancient Egyptians did it! In this informative account, Dorothy and Thomas Hoobler tell the story of the powerful pharaohs who commissioned the pyramids at Giza and offer a fascinating look at the culture of the afterlife in ancient Egypt, explaining exactly how mummies were made. Easy to read and scrupulously researched, this explores the mysteries that have attracted countless visitors to the pyramids for centuries.

    Anthony and Elizabeth Cady Stanton to Gloria Steinem and Hillary Clinton, women throughout US history have fought for equality. In the nineteenth and early twentieth centuries, women were demanding the right to vote. During the 1960s, equal rights and opportunities for women--both at home and in the workplace--were pushed even further. And in the more recent past, Women's Marches have taken place across the world. Celebrate how far women have come with this inspiring read!

    The oldest president ever, he survived a near-fatal assassination attempt and lived to be 93. Who Was Ronald Reagan? covers his life and times in a balanced, entertaining way for children. More than 100 black-and-white illustrations fill out the portrait of our fortieth president.

    But what many people don't know is that it only served as a temple for a couple hundred years. It then became a church, then a mosque, and by the end of the 1600s served as a storehouse for munitions. When an enemy army fired hundreds of cannon balls at the Acropolis, one directly hit the Parthenon. Much of the sculpture was destroyed, three hundred people died, and the site fell into ruin. Today, visitors continue to flock to this world famous landmark, which has become a symbol for Ancient Greece, democracy, and modern civilization. Includes black-and-white illustrations and a foldout color map!

    For generations, France had been besieged by the British. At age 11, Joan began to see religious visions telling her to join forces with the King of France. By the time she was a teenager, she was leading troops into battle in the name of her country. Though she was captured and executed for her beliefs, Joan of Arc became a Catholic saint and has since captured the world's imagination.

    He rose in the ranks to First Lord of the Admiralty and was a staunch opponent of the encroaching German Nazis. Churchill served as Prime Minister of the United Kingdom from 1940 to 1945 and again from 1951 to 1955. Widely regarded as one of the greatest wartime leaders of the 20th century, Churchill was also a historian, a writer, and an artist. He is the only British Prime Minister to have won the Nobel Prize in Literature, and was the first person to be made an honorary citizen of the United States.