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.

    As the young Jane observes the natural world around her with wonder, she dreams of "a life living with and helping all animals," until one day she finds that her dream has come true. With anecdotes taken directly from Jane Goodall's autobiography, McDonnell makes this very true story accessible for the very young--and young at heart.One of the world's most inspiring women, Dr. Jane Goodall is a renowned humanitarian, conservationist, animal activist, environmentalist, and United Nations Messenger of Peace. In 1977 she founded the Jane Goodall Institute (JGI), a global nonprofit organization that empowers people to make a difference for all living things.

    From that day on he never stopped marveling at the universe and seeking to understand it better. Star Stuff follows Carl from his days star gazing from the bedroom window of his Brooklyn apartment, through his love of speculative science fiction novels, to his work as an internationally renowned scientist who worked on the Voyager missions exploring the farthest reaches of space. This book introduces the beloved man who brought the mystery of the cosmos into homes across America to a new generation of dreamers and star gazers.

    He saw the whole, where others saw only parts. And he noticed details others failed to see. Through stunning illustrations and lyrical prose, this picture book presents the life and accomplishments of Ernest Everett Just, an African American biologist who made important discoveries about the cell in the 1930s. Through his careful observations and hard work, Ernest opened up the wonder of the universe to all of us, through a tiny egg cell.

    Why are they all alone in empty cages? Are they being punished? More than anything, he wants to be their champion—their voice—but he stutters uncontrollably. Except when he talks to animals… Then he is fluent. Follow the life of the man Time Magazine calls, "the Indiana Jones of wildlife conservation"as he searches for his voice and fulfills a promise to speak for animals, and people, who cannot speak for themselves. This real-life story with tender illustrations by Catia Chien explores truths not defined by the spoken word.

    Born in complete poverty, the seventh of ten children, Victoria Woodhull was supporting her family by the age of eight as a child preacher. Seeking a better life, she married, divorced, moved to New York City, and became a millionaire by offering Cornelius Vanderbilt financial advice from the spirit world.Victoria did not stop there. Now that she had money and power, she was ready to challenge society's harsh limitations on women. Her boldest act was announcing herself as the first female candidate for the presidency of the United States. She founded her own newspaper to publicize this groundbreaking campaign, which took her from the chambers of Congress to the glorious moment when she was nominated by the Equal Rights Party at a convention that she, a woman, had organized and funded.In the first book about Victoria Woodhull for young readers, Kathleen Krull and Jane Dyer team up to bring one of the most fascinating personalities in U.S. history to life.- The perfect book to explore the electoral process during the upcoming presidential election.- One of the most revolutionary American women has been forgotten by history-until now.- Walker & Company is proud to welcome acclaimed biographer Kathleen Krull and talented illustrator Jane Dyer to our list.

    All it takes is one:One coral gamete to start a colonyOne person to make a differenceOne idea to change the worldThe ongoing efforts to save and rebuild the world's coral reefs--with hammer and glue, and grafts of newly grown coral--are the living legacy of Ken Nedimyer.Kate Messner and Matthew Forsythe tell the true story of the coral restoration pioneer in this brilliant tribute to the wonders of nature and the power of human ingenuity.

    Temple Grandin—one of the world’s quirkiest science heroes!When young Temple was diagnosed with autism, no one expected her to talk, let alone become one of the most powerful voices in modern science. Yet, the determined visual thinker did just that. Her unique mind allowed her to connect with animals in a special way, helping her invent groundbreaking improvements for farms around the globe!The Girl Who Thought in Pictures: The Story of Dr. Temple Grandin is the first book in a brand new educational series about the inspirational lives of amazing scientists. In addition to the illustrated rhyming tale, you’ll find a complete biography, fun facts, a colorful timeline of events, and even a note from Temple herself!

    Mesmer’s mysterious powers in a whimsical look at a true moment in history.The day Ben Franklin first set foot in Paris, France, he found the city all abuzz. Everyone was talking about something new. Remarkable. Thrilling. Strange. Something called Science!But soon the straightforward American inventor Benjamin Franklin is upstaged by a compelling and enigmatic figure: Dr. Mesmer. In elaborately staged shows, Mesmer, wearing a fancy coat of purple silk and carrying an iron wand, convinces the people of Paris that he controls a magic force that can make water taste like a hundred different things, cure illness, and control thoughts! But Ben Franklin is not convinced. Will his practical approach of observing, hypothesizing, and testing get to the bottom of the mysterious Mesmer’s tricks? A rip-roaring, lavishly illustrated peek into a fascinating moment in history shows the development and practice of the scientific method—and reveals the amazing power of the human mind.

    His deep voice is instantly recognizable, and his heartfelt songs resonate with listeners of all ages and backgrounds. G. Neri captures Johnny’s story in beautiful free verse, portraying an ordinary boy with an extraordinary talent who grew up in extreme poverty, faced incredible challenges, and ultimately found his calling by always being true to the gift of his voice. A. G. Ford’s luscious paintings of the dramatic southern landscape of Johnny Cash’s childhood illuminate this portrait of a legend, taking us from his humble beginnings to his enormous success on the world stage.

    Her parents separated when she was young, and her mother insisted on a logic-focused education, rejecting Byron’s “mad” love of poetry. But Ada remained fascinated with her father and considered mathematics “poetical science.” Via her friendship with inventor Charles Babbage, she became involved in “programming” his Analytical Engine, a precursor to the computer, thus becoming the world’s first computer programmer. This picture book biography of Ada Lovelace is a portrait of a woman who saw the potential for numbers to make art.

    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.

    A biography of Abraham Dee Bartlett and how he helped create the modern zoo.

    After all, Kate grew up among the towering pines and redwoods of Northern California. But after becoming the first woman to graduate from the University of California with a degree in science, she took a job as a teacher far south in the dry desert town of San Diego. Where there were almost no trees.Kate decided that San Diego needed trees more than anything else. So this trailblazing young woman singlehandedly started a massive movement that transformed the town into the green, garden-filled oasis it is today. Now, more than 100 years after Kate first arrived in San Diego, her gorgeous gardens and parks can be found all over the city.Part fascinating biography, part inspirational story, this moving picture book about following your dreams, using your talents, and staying strong in the face of adversity is sure to resonate with readers young and old.

    Yet it is a story worth telling. For it helps us remember how much we all might lose when a child's dreams don't come true . . . As a child, Dickens was forced to live on his own and work long hours in a rat-infested blacking factory. Readers will be drawn into the winding streets of London, where they will learn how Dickens got the inspiration for many of his characters. The 200th anniversary of Dickens's birth was February 7, 2012, and this tale of his little-known boyhood is the perfect way to introduce kids to the great author. This Booklist Best Children's Book of the Year is historical fiction at its ingenious best.