From stars, planets and galaxies, to black holes, the Big Bang and life in space, this title has been making it easy for beginners to quickly grasp the basic concepts of astronomy for over 25 years. Updated with the latest discoveries in astronomy and astrophysics, this newest edition of Dinah Moche's classic guide now includes many Web site addresses for spectacular images and news. And like all previous editions, it is packed with valuable tables, charts, star and moon maps and features simple activities that reinforce readers' grasp of basic concepts at their own pace, as well as objectives, reviews, and self-tests to monitor their progress. Dinah L. Moche, PhD (Rye, NY), is an award-winning author, educator, and lecturer. Her books have sold over nine million copies in seven languages.

    About The Author: Henry Gray, F.R.S., Fellow of the royal college of Surgeons: Lecturer on anatomy at St. George?s Hospital Medical School. Table Of Contents: Descriptive and Surgical Anatomy The Articulations Muscles and Fasclae The Blood-vascular system The Lymphatics The Nervous system The Organs of special sense The Organs of Digestion The Organs of voice and respiration The urinary organs The Male Organs of Generation The Female Organs of Generation The Surgical Anatomy of Hernia Surgical Anatomy of the Perinaeum General Anatomy or Histology Embryology

    Smallpox. Incurable and horrifying Ebola-related fevers. For two decades, while a fearful world prepared for nuclear winter, an elite team of Russian bioweaponeers began to till a new killing field: a bleak tract sown with powerful seeds of mass destruction—by doctors who had committed themselves to creating a biological Armageddon. Biohazard is the never-before-told story of Russia’s darkest, deadliest, and most closely guarded Cold War secret.   No one knows more about Russia’s astounding experiments with biowarfare than Ken Alibek. Now the mastermind behind Russia’s germ warfare effort reveals two decades of shocking breakthroughs . . . how Moscow’s leading scientists actually reengineered hazardous microbes to make them even more virulent . . . the secrets behind the discovery of an invisible, untraceable new class of biological agents just right for use in political assassinations . . . the startling story behind Russia’s attempt to turn a sample of the AIDS virus into the ultimate bioweapon. And in a chilling work of real-world intrigue, Biohazard offers us all a rare glimpse into a shadowy scientific underworld where doctors manufacture mass destruction, where witnesses to errors are silenced forever, and where ground zero is closer than we ever dared believe.

    Beah tells how, at the age of twelve, he fled attacking rebels and wandered a land rendered unrecognizable by violence. By thirteen, he’d been picked up by the government army, and became a soldier.My new friends have begun to suspect I haven’t told them the full story of my life.“Why did you leave Sierra Leone?”“Because there is a war.”“You mean, you saw people running around with guns and shooting each other?”“Yes, all the time.”“Cool.”I smile a little.“You should tell us about it sometime.”“Yes, sometime.” This is how wars are fought now: by children, hopped-up on drugs and wielding AK-47s. Children have become soldiers of choice. In the more than fifty conflicts going on worldwide, it is estimated that there are some 300,000 child soldiers. Ishmael Beah used to be one of them. What is war like through the eyes of a child soldier? How does one become a killer? How does one stop? Child soldiers have been profiled by journalists, and novelists have struggled to imagine their lives. But until now, there has not been a first-person account from someone who came through this hell and survived.In A Long Way Gone, Beah, now twenty-five years old, tells a riveting story: how at the age of twelve, he fled attacking rebels and wandered a land rendered unrecognizable by violence. By thirteen, he’d been picked up by the government army, and Beah, at heart a gentle boy, found that he was capable of truly terrible acts. This is a rare and mesmerizing account, told with real literary force and heartbreaking honesty.

    This user-friendly self-study guide is aimed at the general reader who is motivated to tackle that not insignificant challenge. The book is written using straightforward and accessible language, with clear derivations and explanations as well as numerous fully solved problems. For those with minimal mathematical background, the first chapter provides a crash course in foundation mathematics. The reader is then taken gently by the hand and guided through a wide range of fundamental topics, including Newtonian mechanics; the Lorentz transformations; tensor calculus; the Einstein field equations; the Schwarzschild solution (which gives a good approximation of the spacetime of our Solar System); simple black holes and relativistic cosmology. Following the historic 2015 LIGO (Laser Interferometer Gravitational-Wave Observatory) detection, there is now an additional chapter on gravitational waves, ripples in the fabric of spacetime that potentially provide a revolutionary new way to study the universe. Special relativity helps explain a huge range of non-gravitational physical phenomena and has some strangely counter-intuitive consequences. These include time dilation, length contraction, the relativity of simultaneity, mass-energy equivalence and an absolute speed limit. General relativity, the leading theory of gravity, is at the heart of our understanding of cosmology and black holes.Understand even the basics of Einstein's amazing theory and the world will never seem the same again. ContentsPrefaceIntroduction1 Foundation mathematics2 Newtonian mechanics3 Special relativity4 Introducing the manifold5 Scalars, vectors, one-forms and tensors6 More on curvature7 General relativity8 The Newtonian limit9 The Schwarzschild metric10 Schwarzschild black holes11 Cosmology12 Gravitational wavesAppendix: The Riemann curvature tensorBibliographyAcknowledgementsJanuary 2019. This third edition has been revised to make the material even more accessible to the enthusiastic general reader who seeks to understand the mathematics of relativity.

    -- Highly illustrated first reference books-- Topics are arranged thematically and provide in-depth explanations using simple language-- Contains lots of practical experiments

    Regarded as the world’s first geneticist, Mendel overcame poverty and obscurity to discover one of the fundamental aspects of genetic science: animals, plants, and people all inherit and pass down traits through the same process, following the same rules. Living the slow-paced, contemplative life of a friar, Gregor Mendel was able to conceive and put into practice his great experiment: growing multiple generations of peas. From observing yellow peas, green peas, smooth peas, and wrinkled peas, Mendel crafted his theory of heredity—years before scientists had any notion of genes. Children will be inspired by Gregor’s neverending search for knowledge, and his famous experiments are easy to understand as an introduction to genetics. F&P level: Q

    McGregor, and many other Beatrix Potter characters remain in the hearts of millions. However, though Potter is a household name around the world, few know the woman behind the illustrations. Her personal life, including a romantic relationship with her publisher, Norman Warne, and her significant achievements outside of children's literature remain largely unknown. In Linda Lear's enchanting new biography, we get the life story of this incredible, funny, and independent woman. As one of the first female naturalists in the world, Potter brought the beauty and importance of nature back into the imagination at a time when plunder was more popular than preservation. Through her art she sought to encourage conservation and change the world. With never before seen illustrations and intimate detail, Lear goes beyond our perrenial fascination with Potter as a writer and illustrator of children's books, and delves deeply into the life of a most unusual and gifted woman--one whose art was timeless, and whose generosity left an indelible imprint on the countryside.

    Comparing gene sequences, examining atomic structures of proteins, and looking into the geochemistry of rocks have helped explain evolution in more detail than ever before. Nick Lane expertly reconstructs the history of life by describing the ten greatest inventions of evolution (including DNA, photosynthesis, sex, and sight), based on their historical impact, role in organisms today, and relevance to current controversies. Who would have guessed that eyes started off as light-sensitive spots used to calibrate photosynthesis in algae? Or that DNA’s building blocks form spontaneously in hydrothermal vents? Lane gives a gripping, lucid account of nature’s ingenuity, and the result is a work of essential reading for anyone who has ever pondered or questioned the science underlying evolution’s greatest gifts to man.

    Illustrated with black-and-white archival engravings with an introduction by Henry Louis Gates, Jr.

        Everything You Need to Ace American History . . . covers Native Americans to the war in Iraq. There are units on Colonial America; the Revolutionary War and the founding of a new nation; Jefferson and the expansion west; the Civil War and Reconstruction; and all of the notable events of the 20th century—World Wars, the Depression, the Civil Rights movement, and much more. The BIG FAT NOTEBOOK™ series is built on a simple and irresistible conceit—borrowing the notes from the smartest kid in class. There are five books in all, and each is the only book you need for each main subject taught in middle school: Math, Science, American History, English Language Arts, and World History. Inside the reader will find every subject’s key concepts, easily digested and summarized: Critical ideas highlighted in neon colors. Definitions explained. Doodles that illuminate tricky concepts in marker. Mnemonics for memorable shortcuts. And quizzes to recap it all. The BIG FAT NOTEBOOKS meet Common Core State Standards, Next Generation Science Standards, and state history standards, and are vetted by National and State Teacher of the Year Award–winning teachers. They make learning fun, and are the perfect next step for every kid who grew up on Brain Quest.

    This picture book biography examines the life and career of naturalist and artist Anna Comstock (1854-1930), who defied social conventions and pursued the study of science. From the time she was a young girl, Anna Comstock was fascinated by the natural world. She loved exploring outdoors, examining wildlife and learning nature's secrets. From watching the teamwork of marching ants to following the constellations in the sky, Anna observed it all. And her interest only increased as she grew older and went to college at Cornell University. There she continued her studies, pushing back against those social conventions that implied science was a man's pursuit. Eventually Anna became known as a nature expert, pioneering a movement to encourage schools to conduct science and nature classes for children outdoors, thereby increasing students' interest in nature. In following her passion, this remarkable woman blazed a trail for female scientists today.

    Our bodies are a quirky mix of new and old, with strokes of genius alongside glitches and imperfections which are all inherited from distant ancestors. Our development and evolutionary past explains why, as embryos, we have what look like gills, and as adults we suffer from back pain.This is a tale of discovery, not only exploring why and how we have developed as we have, but also looking at the history of our anatomical understanding. It combines the remarkable skills and qualifications Alice Roberts has as a doctor, anatomist, osteoarchaeologist and writer. Above all, she has a rare ability to make science accessible, relevant and interesting to mainstream audiences and readers.

    Pulitzer Prize-winning astronomer Carl Sagan, author of Cosmos and Contact, and writer Ann Druyan explore the origin, nature, and future of comets, and the exotic myths and portents attached to them. The authors show how comets have spurred some of the great discoveries in the history of science and raise intriguing questions about these brilliant visitors from the interstellar dark.Were the fates of the dinosaurs and the origins of humans tied to the wanderings of a comet? Are comets the building blocks from which worlds are formed?Lavishly illustrated with photographs and specially commissioned full-color paintings, Comet is an enthralling adventure, indispensable for anyone who has ever gazed up at the heavens and wondered why."SIMPLY THE BEST." *The Times of London"FASCINATING, EVOCATIVE, INSPIRING." *The Washington Post"COMET HUMANIZES SCIENCE. A BEAUTIFUL, INTERESTING BOOK." *United Press International"MASTERFUL . . . SCIENCE, POETRY, AND IMAGINATION." *The Atlanta Journal & Constitution

    A layman's guide to art history provides the reader with a basic working knowledge of art and its influence on society.