As these sheets traveled, they caused enormous changes in the Earth's landscape and climate, leading to the evolution of creatures such as giant armadillos, saber-toothed cats, and woolly mammoths as well as club-wielding Neanderthals and later the cleverer modern humans. Nico Medina re-creates this harsh ancient world in a vivid and easy-to-read narrative.

    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.

    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.

    From its humble beginnings, the company has lived up to its name--which comes from the Danish phrase meaning to always "play well"--encouraging children to use their imagination and build whatever they can dream up. In this book, author Jim O'Connor describes how a simple concept--small plastic bricks that snap together--morphed into a cultural phenomenon.

    Learn the story behind the creation of Walt Disney World. In 1964, when Walt Disney and his brother Roy decided to build a second theme park in the Florida swamplands, they kept it super hush-hush. Why? Well, if word got out that they planned to buy up lots of land, the price would have skyrocketed. So the Disneys cleverly covered up their trail, avoiding the Orlando airport and even using made-up names, like Walt and Roy Davis, for their flights. The deception worked. In covering the history of the Most Magical Place On Earth, Joan Holub takes readers both behind the scenes and underneath the park (there are secret employee-only tunnels that form one big circle under the Magic Kingdom). Loaded with fun facts, this book is a great companion to Who Was Walt Disney?

    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.

    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.

    Born in Boston in 1809, Poe was orphaned at age two. He was soon adopted by a Virginia family who worked as tombstone merchants. In 1827 he enlisted in the Army and subsequently failed out of West Point. His first published story, The Raven, was a huge success, but his joy was overshadowed by the death of his wife. Poe devoted his life to writing and his tragic life often inspired his work. He is considered to be the inventor of detective fiction and the father of American mystery writers. His work continues to influence popular culture through films, music, literature, and television.

    He complained that his father, the great king of Macedon, wasn't leaving anything for him to conquer! This, of course, was not the case. King Alexander went on to control most of the known world of the time. His victories won him many supporters, but they also earned him enemies. This easy-to-read biography offers a fascinating look at the life of Alexander and the world he lived in.

     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.

    But he forged a sound all his own—and a look that was all his own, too. With curled lip, swiveling hips, and greased pompadour, Elvis changed popular music forever, ushering in the age of rock and roll. Geoff Edgers’s fascinating biography of this icon of American pop culture includes black and- white illustrations on nearly every spread.

    When the plague broke out in London in 1665 he was forced to return home from college. It was during this period of so much death, that Newton gave life to some of the most important theories in modern science, including gravity and the laws of motion.

    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.

    He founded Industrial Light and Magic, which transformed special sound and visual effects throughout the Hollywood film industry. He is best known, of course, as the creator of the Star Wars movie, television, gaming, toy and merchandise empire, as well as the archeologist-adventure series Indiana Jones.  Discover the man behind the magic in Who Is George Lucas?

    Martin Luther King, Jr. was only 25 when he helped organize the Montgomery Bus Boycott and was soon organizing black people across the country in support of the right to vote, desegregation, and other basic civil rights. Maintaining nonviolent and peaceful tactics even when his life was threatened, King was also an advocate for the poor and spoke out against racial and economic injustice until his death from an assassin's bullet in 1968. With clearly written text that explains this tumultuous time in history and 80 black-and-white illustrations, this Who Was?? celebrates the vision and the legacy of a remarkable man.