They're also the national symbol of Panama. But they started to disappear about fifteen years ago. What's killing them? Could it be a change in their habitat? What about pollution? Might it be a result of climate change? Follow a team of scientists working to save these frogs and protect frog populations worldwide in this real-life science mystery.

    His unique image, complete with V-sign, giant cigar, and outlandish costumes, was as universally famous as Charlie Chaplin's tramp. Now, in Churchill, The Unexpected Hero, Paul Addison offers a major reassessment of this highly charismatic figure, focusing largely on the life-long battle over Churchill's reputation. Churchill's career, notes Addison, was one of snakes and ladders. The longest of the snakes was Gallipoli, the ill-starred military campaign that all but destroyed his career in 1915. After Gallipoli, Churchill's reputation plummeted, and he was attacked as a shameless egotist, an opportunist without principles or convictions, an unreliable colleague, an erratic policy-maker who lacked judgement, and a reckless amateur strategist with a dangerous passion for war and bloodshed. Indeed, throughout his career, at one time or another, Churchill offended every party and faction in the land. Yet all but the most hostile also conceded that he possessed great abilities, remarkable eloquence, and a streak of genius, and with the coming of World War II, the man long excluded from high office--on the grounds that he was a danger to King and Country--became the savior of that country, a truly great war leader. As Churchill's reputation skyrocketed, Addison shows how his heroic self-image was communicated to the world through a stupendous public relations campaign in which oratory, journalism, and history were all pressed into service. Churchill won two great victories in World War II. The first was a victory over Nazi Germany. The second, a victory over the legion of skeptics who derided his judgement and denied his claims to greatness.

    Filled with archival photographs and amazing fact boxes, this groundbreaking series introduces young readers to some of history's most interesting and influential characters.Supports the Common Core State Standards.

    Young Will left the town of Stratford to pursue theater in London, where his work eventually thrived and made him a famous and wealthy man. With black-and-white illustrations that include a diagram of the famous Globe theater, Celeste Davidson Mannis puts together the pieces of Shakespeare's life and work for young readers.

    While he was working on his Atomic Energy badge for the Boy Scouts, David’s obsessive attention turned to nuclear energy. Throwing caution to the wind, he plunged into a new project: building a model nuclear reactor in his backyard garden shed.Posing as a physics professor, David solicited information on reactor design from the U.S. government and from industry experts. Following blueprints he found in an outdated physics textbook, David cobbled together a crude device that threw off toxic levels of radiation. His wholly unsupervised project finally sparked an environmental emergency that put his town’s forty thousand suburbanites at risk. The EPA ended up burying his lab at a radioactive dumpsite in Utah. This offbeat account of ambition and, ultimately, hubris has the narrative energy of a first-rate thriller.

    Amelia Earhart follows the charismatic aviator from her first sight of an airplane at the age of ten to the last radio transmission she made before she vanished. Illustrated with original artworks, contemporary photographs, quotes, and details, this is a great introduction to the famous pilot. The book includes a bibliography and an index.

    From a highly-respected picture book author/illustrator comes a lyrical evocation of Philippe Petit's 1974 tightrope walk between the World Trade Center towers.

    And so, in 1791, he wrote to Secretary of State Thomas Jefferson, who had signed the Declaration of Independence. Banneker attacked the institution of slavery and dared to call Jefferson a hypocrite for owning slaves. Jefferson responded. This is the story of Benjamin Banneker--his science, his politics, his morals, and his extraordinary correspondence with Thomas Jefferson. Illustrated in full-page scratchboard and oil paintings by Caldecott Honor artist Brian Pinkney.

    When Marie was young, she was unable to go to college because she was a woman. But when she was older, her scientific work was respected around the world. Her discoveries of radium and polonium dramatically helped in the fight against cancer, and she went on to win the Nobel Prize for Physics! This moving book features stylish and quirky illustrations and extra facts at the back, including a biographical timeline with historical photos and a detailed profile of the scientist's life.Little People, BIG DREAMS is a best-selling series of books and educational games that explore the lives of outstanding people, from designers and artists to scientists and activists. All of them achieved incredible things, yet each began life as a child with a dream. This empowering series offers inspiring messages to children of all ages, in a range of formats. The board books are told in simple sentences, perfect for reading aloud to babies and toddlers. The hardcover versions present expanded stories for beginning readers. Boxed gift sets allow you to collect a selection of the books by theme. Paper dolls, learning cards, matching games, and other fun learning tools provide even more ways to make the lives of these role models accessible to children.Inspire the next generation of outstanding people who will change the world with Little People, BIG DREAMS!

    The first person narration gives this book a friendly, personal feel that makes Galileo's remarkable achievements and ideas completely accessible to young readers. And Christensen's artwork glows with the light of the stars he studied.Galileo's contributions were so numerous—the telescope! the microscope!—and his ideas so world-changing—the sun-centric solar system!—that Albert Einstein called him "the father of modern science." But in his own time he was branded a heretic and imprisoned in his home. He was a man who insisted on his right to pursue the truth, no matter what the cost—making his life as interesting and instructive as his ideas.

    In school she quickly skipped ahead several grades and was soon studying complex equations with the support of a professor who saw great promise in her. But ability and opportunity did not always go hand in hand. As an African American and a girl growing up in an era of brutal racism and sexism, Katherine faced daily challenges. Still, she lived her life with her father’s words in mind: “You are no better than anyone else, and nobody else is better than you.” In the early 1950s, Katherine was thrilled to join the organization that would become NASA. She worked on many of NASA’s biggest projects including the Apollo 11 mission that landed the first men on the moon. Katherine Johnson’s story was made famous in the bestselling book and Oscar-nominated film Hidden Figures. Now in Reaching for the Moon she tells her own story for the first time, in a lively autobiography that will inspire young readers everywhere.

    When she spilled the milk, she was brought before the court for stealing. Because she could read, Molly escaped the typicalpunishment of death on the gallows. At the age of seventeen, the English dairymaid was exiled from her country and sentenced to work as an indentured servant in British Colonial America. Molly worked for a planter in Maryland for seven long years. Then she was given an ox hitched to a cart, some supplies-and her freedom. That a lone woman should stake land was unheard of. That she would marry an African slave was even more so. Yet Molly prospered, and with her husband Bannaky, she turned a one-room cabin in the wilderness into a thriving one hundred-acre farm. And one day she had the pleasure of writing her new grandson's name in her cherished Bible: Benjamin Banneker.

    From Billy Lee, valet to George Washington, to Alfred Jackson, faithful servant of Andrew Jackson, these dramatic narratives explore our country’s great tragedy—that a nation “conceived in liberty” was also born in shackles.These stories help us know the real people who were essential to the birth of this nation but traditionally have been left out of the history books. Their stories are true—and they should be heard.This thoroughly-researched and documented book can be worked into multiple aspects of the common core curriculum.

    This is a snapshot of Houdini's life, centering on one of his most famous jumps. As Houdini prepares for a death-defying leap into the icy Charles River in Boston, biographer Jason Lutes and artist Nick Bertozzi reveal Houdini's life and influence: from the anti-Semitism Houdini fought all his life, to the adulation of the American public; from his hounding by the press, to his loving relationship with his wife Bess; from his egoism to his insecurity; from his public persona -- to the secret behind his most amazing trick! And it's all in graphic form, so it's fresh, original, and unlike anything previously published about this most fascinating of American showmen.

    A tiny leak could shoot pressurized water straight through the men like bullets! A single spark could cause their oxygen tanks to explode! No one had ever dived lower than a few hundred feet...and come back. But Otis and Will were determined to become the first people to see what the deep ocean looks like.This suspenseful story from acclaimed author Barb Rosenstock with mesmerizing watercolors by award-winning artist Katherine Roy will put you right in the middle of the spine-tingling, record-setting journey down, down into the deep.