Growing up in Mexico City, Mario was a curious boy who studied hidden worlds through a microscope. As a young man in California, he discovered that CFCs, used in millions of refrigerators and spray cans, were tearing a hole in the earth's protective ozone layer. Mario knew the world had to be warned--and quickly. Today Mario is a Nobel laureate and a recipient of the Presidential Medal of Freedom. His inspiring story gives hope in the fight against global warming.

    No jail cell or straitjacket could hold him! He shucked off handcuffs as easily as gloves.In this fresh, witty biography of the most famous bamboozler since Merlin, Sid Fleischman, a former professional magician, enriches his warm homage with insider information and unmaskings. Did Houdini really pick the jailhouse lock to let a fellow circus performer escape? Were his secrets really buried with him? Was he a bum magician, as some rivals claimed? How did he manage to be born in two cities, in two countries, on two continents at the same instant?Here are the stories of how a knockabout kid named Ehrich Weiss, the son of an impoverished rabbi, presto-changoed himself into the legendary Harry Houdini. Here, too, are rare photographs never before seen by the general reader!

    But after the stock market crashed in 1929, Vivien lost all his savings. Then he heard about a job opening at the Vanderbilt University medical school under the supervision of Dr. Alfred Blalock. Vivien knew that the all-white school would never admit him as a student, but he hoped working there meant he was getting closer to his dream.As Dr. Blalock's research assistant, Vivien learned surgical techniques. In 1943, Vivien was asked to help Dr. Helen Taussig find a cure for children with a specific heart defect. After months of experimenting, Vivien developed a procedure that was used for the first successful open-heart surgery on a child. Afterward, Dr. Blalock and Dr. Taussig announced their innovative new surgical technique, the Blalock-Taussig shunt. Vivien's name did not appear in the report.Overcoming racism and resistance from his colleagues, Vivien ushered in a new era of medicine children's heart surgery. Tiny Stitches is the compelling story of this incredible pioneer in medicine.

    By turns dreamlike and nightmarish, this heavily illustrated account of determination, courage, family loyalty, and the luck of coincidence is a true publishing event."

    It was the first trip across an engineering marvel that had taken nearly fourteen years to construct. The woman's husband was the chief engineer, and he knew all about the dangerous new technique involved. The woman insisted she learn as well. When he fell ill mid-construction, her knowledge came in handy. She supervised every aspect of the project while he was bedridden, and she continued to learn about things only men were supposed to know:math,science,engineering.Women weren't supposed to be engineers. But this woman insisted she could do it all, and her hard work helped to create one of the most iconic landmarks in the world. This is the story of Emily Roebling, the secret engineer behind the Brooklyn Bridge, from author-illustrator Rachel Dougherty.

    Whir. Buzz.Not so long ago, math problems had to be solved with pencil and paper, mail delivered by postman, and files were stored in paper folders and metal cabinets. But three women, Betty Snyder, Jean Jennings, and Kay McNulty knew there could be a better way. During World War II, people hoped ENIAC (Electronic Numerical Integrator and Computer), one of the earliest computers, could help with the war effort. With little guidance, no instructions, and barely any access to the machine itself, Betty, Jean, and Kay used mathematics, electrical engineering, logic, and common sense to command a computer as large as a room and create the modern world. The machine was like Betty, requiring outside-the-box thinking, like Jean, persistent and consistent, and like Kay, no mistakes, every answer perfect. Today computers are all around us, performing every conceivable task, thanks, in large part, to Betty, Jean, and Kay's pioneering work. Instructions Not Included is their story.This fascinating chapter in history is brought to life with vivid prose by Tami Lewis Brown and Debbie Loren Dunn and with striking illustrations by Chelsea Beck. Detailed back matter including historical photos provides a closer look.

    While many people lived in fear of the Nazis, Irena defied them, even though it could have meant her life. She kept records of the children she helped smuggle away from the Nazis grasp, and when she feared her work might be discovered, she buried her lists in jars, hoping to someday recover them and reunite children with their parents. This gripping true story of a woman who took it upon herself to help save 2,500 children from the Warsaw Ghetto during the Holocaust is not only inspirational; it's unforgettable.

    A perfect introduction to mathematical concepts for young readers, written by a Newbery honor-winning author!This colorfully illustrated biography of the Greek philosopher and scientist Eratosthenes, who compiled the first geography book and accurately measured the globe's circumference, is just right for budding mathematicians, scientists, historians, and librarians! Filled with fascinating details about Eratosthenes's world (and in print since 1994), kids are sure to flip through the pages time and again.

    A wasp that hunts beetles nearly twice its size. The lives of fascinating creatures such as these were unknown until one man introduced them to the world.Meet Jean-Henri Fabre, one of the most important naturalists of all time. As a boy in the French countryside, Henri spent hours watching insects. He dreamed of observing them in a new way: in their own habitats. What he discovered in pursuing that dream was shocking; these small, seemingly insignificant creatures led secret lives—lives of great drama!With its lively, lyrical text and richly detailed illustrations, this intriguing picture-book biography introduces the man who would forever change the way we look at insects, bringing to life the fascinating world of dazzling beetles, ferocious wasps, and other amazing small wonders that exist all around us.

    Often it got him into trouble. Once he painted pictures with tar on the side of his family's white house. His family was poor, and the happiest time of his childhood was spent living on a farm in Missouri. His affection for small-town life is reflected in Disneyland Main Streets around the world. With black-and-white illustrations throughout, this biography reveals the man behind the magic.This book is not authorized, licensed or endorsed by the Walt Disney Company or any affiliate.

    Celebrate their accomplishments and their contributions to a collective history and a community that continues to evolve and thrive today!Biographical poems include: Aida de Acosta, Arnold Rojas, Baruj Benacerraf, César Chávez, Fabiola Cabeza de Baca, Félix Varela, George Meléndez, José Martí, Juan de Miralles, Juana Briones, Julia de Burgos, Louis Agassiz Fuertes, Paulina Pedroso, Pura Belpré, Roberto Clemente, Tito Puente, Ynes Mexia, Tomás Rivera

    Most people didn't even believe this city existed. But if Fawcett could find it, he would be rich and famous forever. This is the true story of one man's thrilling, dangerous journey into the jungle, and what he found on his quest for the lost city of Z.

    With photos, maps, and handwritten notes from Amelia herself—plus informative sidebars tackling everything from the history of flight to what Amelia liked to eat while flying (tomato soup).

    Each volume of four 30-minute histories will dig into the petty name-calling and grumbling grudges that led to many of the world’s greatest advancements, all delivered with a cheeky sense of humor.Choose sides: Cope or Marsh, the jerks who discovered so many dinosaurs; Hamilton or Burr, whose rivalry fueled American politics; Queen Elizabeth or Mary Queen of Scots, who fought to rule England; Adidas or Puma, whose rivalry changed the world of sports and fashion.Kidnappings, rock fights, duels, and explosions, Rivals! shows world leaders at their absolute best and their worst, often at the same time.

    She dreamed of playing the violin, but with little money for anything but the bare essentials, it was never an option...until a music teacher named Favio Chávez arrived. He wanted to give the children of Cateura something special, so he made them instruments out of materials found in the trash. It was a crazy idea, but one that would leave Ada—and her town—forever changed. Now, the Recycled Orchestra plays venues around the world, spreading their message of hope and innovation.