How she was treated by medical and legal officials reveals a lesser-known story of human and constitutional rights, entangled with the science of pathology and enduring questions about who Mary Mallon really was. How did her name become synonymous with deadly disease? And who is really responsible for the lasting legacy of Typhoid Mary? This thorough exploration includes an author's note, timeline, annotated source notes, and bibliography.

    Young readers will learn how a British naturalist named Charles Darwin studied nature and developed his now-famous concepts of natural selection and survival of the fittest. And how modern-day science has added to our understanding of the theory of evolution. Can something as complex and wondrous as the natural world be explained by a simple theory? The answer is yes, and now Evolution explains how in a way that makes it easy to understand.

    An index and glossary are included.

    As we dream with him, we are taken further and further into mathematical theory, where ideas eventually take flight, until everyone--from those who fumble over fractions to those who solve complex equations in their heads--winds up marveling at what numbers can do.Hans Magnus Enzensberger is a true polymath, the kind of superb intellectual who loves thinking and marshals all of his charm and wit to share his passions with the world. In The Number Devil, he brings together the surreal logic of Alice in Wonderland and the existential geometry of Flatland with the kind of math everyone would love, if only they had a number devil to teach them.

    After hours of trying to find his way back, a nervous and tired Donn falls down an embankment, making it impossible for him to be found. One sleepless night goes by, followed by a second . . . and before Donn knows it, almost two weeks have passed, leaving him starving, scared, and delirious.With rainstorms, black bears, and his fear of being lost forever, Donn's journey is a physically, mentally, and emotionally charged story told from the point of view of the boy who lived it.

    The Golden Section—otherwise known as phi, the golden mean, or the golden ratio—is one of the most elegant and beautiful rations in the universe.Defined as a line segment divided into two unequal parts, such that the ratio of the shorter portion to the longer portion is the same as the ratio of the longer portion to the whole, it pops up throughout nature—in water, DNA, the proportions of fish and butterflies, and the number of teeth we possess—as well as in art and architecture, music, philosophy, science, and mathematics.Beautifully illustrated, The Golden Section tells the story of this remarkable construct and its wide-ranging impact on civilization and the natural world.

    They defied the prejudices of the time. And they blazed a trail for generations of women to follow.What does it take to be an astronaut? Excellence at flying, courage, intelligence, resistance to stress, top physical shape — any checklist would include these. But when America created NASA in 1958, there was another unspoken rule: you had to be a man. Here is the tale of thirteen women who proved that they were not only as tough as the toughest man but also brave enough to challenge the government. They were blocked by prejudice, jealousy, and the scrawled note of one of the most powerful men in Washington. But even though the Mercury 13 women did not make it into space, they did not lose, for their example empowered young women to take their place in the sky, piloting jets and commanding space capsules. ALMOST ASTRONAUTS is the story of thirteen true pioneers of the space age.

    They began their harrowing journey on bicycles, pedaling to Southern France with children's book manuscripts among their few possessions.Louise Borden combed primary resources, including Hans Rey's pocket diaries, to tell this dramatic true story. Archival materials introduce readers to the world of Hans and Margret Rey while Allan Drummond dramatically and colorfully illustrates their wartime trek to a new home.Follow the Rey's amazing story in this unique large format book that resembles a travel journal and includes full-color illustrations, original photos, actual ticket stubs and more. A perfect book for Curious George fans of all ages.

    They battled piranhas, tigers, and vampire bats. Even the plants themselves could be lethal! But these intrepid eighteenth- and nineteenth-century explorers were determined to find and collect new and unusual specimens, no matter what the cost. Then they tried to transport the plants—and themselves—home alive. Creating an important legacy in science, medicine, and agriculture, the plant hunters still inspire the scientific and environmental work of contemporary plant enthusiasts.Working from primary sources—journals, letters, and notes from the field—Anita Silvey introduces us to these daring adventurers and scientists. She takes readers into the heart of their expeditions to then-uncharted places such as the Amazon basin, China, and India. As she brings a colorful cast of characters to life, she shows what motivated these Indiana Jones–type heroes. In The Plant Hunters, science, history, and adventure have been interwoven to tell a largely forgotten—yet fascinating—story.

    Both were brilliant students who attended college--one at Princeton, the other at Columbia--and studied law. Both were young staff officers under General George Washington, and both became war heroes. Politics beckoned them, and each served in the newly formed government of the fledgling nation. Why, then, did these two face each other at dawn in a duel that ended with death for one and opprobrium for the other? Judith St. George's lively biography, told in alternating chapters, brings to life two complex men who played major roles in the formation of the United States.

    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.

    One ship was loaded top to bottom with munitions and one held relief supplies, both intended for wartorn Europe. The resulting blast flattened two towns, Halifax and Dartmouth, and killed nearly 2,000 people. As if that wasn't devastating enough, a blizzard hit the next day, dumping more than a foot of snow on the area and paralyzing much-needed relief efforts.Fascinating, edge-of-your-seat storytelling based on original source material conveys this harrowing account of tragedy and recovery. This thoroughly-researched and documented book can be worked into multiple aspects of the common core curriculum.

    Oddly enough, scientists began to understandthis fascinating fluid only within the past one hundred years and how its microscopiccomponents nourish the entire body.Whether the tales of vampires, medieval medical practices, and Mayan sacrificialrites captivate or terrify, this comprehensive investigation into blood’s past and presentwill surely enthrall. And if this account is a little bloodcurdling, well, that’s half thefun!

    The girl, Nya, is fetching water from a pond that is two hours’ walk from her home: she makes two trips to the pond every day. The boy, Salva, becomes one of the "lost boys" of Sudan, refugees who cover the African continent on foot as they search for their families and for a safe place to stay. Enduring every hardship from loneliness to attack by armed rebels to contact with killer lions and crocodiles, Salva is a survivor, and his story goes on to intersect with Nya’s in an astonishing and moving way.

    Strong females smack of the unfeminine. They have been called wicked, wanton, and willful. Sometimes that is a just designation, but just as often it is not. "Well-behaved women seldom make history," is the frequently quoted statement by historian and feminist Laurel Thatcher Ulrich. But what makes these misbehaving women "bad"? Are we idolizing the wicked or salvaging the strong?In BAD GIRLS, readers meet twenty-six of history’s most notorious women, each with a rotten reputation. But authors Jane Yolen and Heidi Stemple remind us that there are two sides to every story. Was Delilah a harlot or hero? Was Catherine the Great a great ruler, or just plain ruthless? At the end of each chapter, Yolen and Stemple appear as themselves in comic panels as they debate each girl’s badness—Heidi as the prosecution, Jane for context.This unique and sassy examination of famed, female historical figures will engage readers with its unusual presentation of the subject matter. Heidi and Jane’s strong arguments for the innocence and guilt of each bad girl promotes the practice of critical thinking as well as the idea that history is subjective. Rebecca Guay’s detailed illustrations provide a rich, stylized portrait of each woman, while the inclusion of comic panels will resonate with fans of graphic novels.