Henrietta spent years measuring star positions and sizes from photographs taken by the telescope at the Harvard College Observatory, where she worked. After Henrietta observed that certain stars had a fixed pattern to their changes, her discovery made it possible for astronomers to measure greater and greater distances—leading to our present understanding of the vast size of the universe.An astronomer of her time called Henrietta Leavitt “one of the most important women ever to touch astronomy,” and another close associate said she had the “best mind at the Harvard Observatory.” Henrietta Leaveitt's story will inspire young women and aspiring scientists of all kinds and includes additional information about the solar system and astronomy.

    Written as a series of riddles and illustrated in the style of medieval manuscripts by an award-winning author and artist, From the Good Mountain will intrigue readers of all ages. On every page there is something surprising to learn about how the very thing you are holding in your hands came to be.

    The soft, reflective, and often humorous words and pictures create a glimpse into everyday life through wide and wondering eyes that blends the familiar with the profoundly spiritual.

    It's a math class you'll never forget.This classic picture book is an ALA Notable Book, a Reading Rainbow Feature Selection, and a Boston Globe/Horn Book Honor Book for Illustration.The repackage of this fun look at math concepts includes a letter from the author that features several ways for children to find a million everyday things.

    A picture book biography of sculptor Louise Bourgeois focusing on how her childhood family life influenced her later works.

    Capturing an engineer’s creative vision and mind for detail, this fully illustrated picture book biography sheds light on how the American inventor George Ferris defied gravity and seemingly impossible odds to invent the world’s most iconic amusement park attraction, the Ferris wheel.     A fun, fact-filled text by Gibbs Davis combines with Gilbert Ford’s dazzling full-color illustrations to transport readers to the 1893 World’s Fair, where George Ferris and his big, wonderful wheel lifted passengers to the skies for the first time.

    Tutored by her father, the mathematician Theon, Hypatia quickly became an authority in the subjects of mathematics, astronomy, and philosophy. Word spread of her brilliance, and scholars from all over the world journeyed to Alexandria to seek her teachings.

    So when Ben and the rest of his family make their way to America, Ben brings both his sharp artistic eye and his desire to fight for what’s right. As he grows, he speaks for justice through his art—by disarming classmates who bully him because he’s Jewish, by defying his teachers’ insistence that he paint beautiful landscapes rather than true stories, by urging the US government to pass Depression-era laws to help people find food and jobs.

    Everyone knows the story of Abraham Lincoln, but few know anything about the spy who saved him! Allan Pinkerton’s life changed when he helped the Chicago Police Department track down a group of counterfeiters. From there, he became the first police detective in Chicago and established the country’s most successful detective agency. He went on to solve more than 300 murders and recover millions of dollars in stolen money. However, his greatest contribution was protecting Abraham Lincoln on the way to his 1861 inauguration. Though assassins attempted to murder Lincoln en route, Pinkerton foiled their plot and brought the president safely to the capital. The Eye That Never Sleeps is illustrated with a contemporary cartoon style, mixing art and text in a way that appeals to readers of all ages. The book includes a bibliography and a timeline.

    But as readers will see in this first-ever illustrated picture book about Nadia’s journey to Olympic gold, the road from small-town girl to world-class athlete was full of many imperfect moments.      Expert illustrations that capture the energy and fluidity of Nadia's exuberant gymnastic routines and referential back matter round out this inspirational story of determination and overcoming adversity. A perfect 10.

    But years later when she returns home, she is shocked to see whole forests being cut down, and she knows that soon all the trees will be destroyed. So Wangari decides to do something—and starts by planting nine seedlings in her own backyard. And as they grow, so do her plans. . . .         This true story of Wangari Maathai, environmentalist and winner of the Nobel Peace Prize, is a shining example of how one woman’s passion, vision, and determination inspired great change.         Includes an author’s note.This book was printed on 100% recycled paper with 50% postconsumer waste.

    But the town of San Fernando de Apure would never forget this kind young man and his adoring alligator, who played with the neighborhood children, took part in Faoro’s wedding, and, eventually, mourned his loss. Now their story is being shared with the world.In this delightful picture book first published in Venezuela, the author brings us back to her own childhood in Venezuela, as one of the children who used to visit this famous caiman, to tell the story of a man who loved animals and how his friendship with his alligator sparked a lasting legacy.

    But before she can work off her debt, an unthinkable chain of events unfolds: a capture by slave traders; weeks in a dark and airless hold; a landing in Cuba, where she and three other children are sold and taken aboard the Amistad; a mutiny aboard ship; a trial in New Haven that eventually goes all the way to the Supreme Court and is argued in the Africans’ favor by John Quincy Adams. Narrated in a remarkable first-person voice, this fictionalized book of memories of a real-life figure retells history through the eyes of a child — from seeing mirrors for the first time and struggling with laughably complicated clothing to longing for family and a home she never forgets. Lush, full-color illustrations by Robert Byrd, plus archival photographs and documents, bring an extraordinary journey to life.

    It features not only borders, cities, rivers, and peaks, but also places of historical and cultural interest, eminent personalities, iconic animals and plants, cultural events, and many more fascinating facts associated with every region of our planet.

      John wants to be a preacher when he grows up—a leader whose words stir hearts to change, minds to think, and bodies to take action. But why wait? When John is put in charge of the family farm’s flock of chickens, he discovers that they make a wonderful congregation! So he preaches to his flock, and they listen, content under his watchful care, riveted by the rhythm of his voice.