On that day, astronomer Arthur Eddington and his team observed a solar eclipse and found something extraordinary: gravity bends light, just as Einstein predicted. The finding confirmed the theory of general relativity, fundamentally changing our understanding of space and time.A century later, another group of astronomers is performing a similar experiment on a much larger scale. The Event Horizon Telescope, a globe-spanning array of radio dishes, is examining space surrounding Sagittarius A*, the supermassive black hole at the center of the Milky Way. As Ron Cowen recounts, the foremost goal of the experiment is to determine whether Einstein was right on the details. Gravity lies at the heart of what we don't know about quantum mechanics, but tantalizing possibilities for deeper insight are offered by black holes. By observing starlight wrapping around Sagittarius A*, the telescope will not only provide the first direct view of an event horizon--a black hole's point of no return--but will also enable scientists to test Einstein's theory under the most extreme conditions.Gravity's Century shows how we got from the pivotal observations of the 1919 eclipse to the Event Horizon Telescope, and what is at stake today. Breaking down the physics in clear and approachable language, Cowen makes vivid how the quest to understand gravity is really the quest to comprehend the universe.

    Whimsical color illustrations on every page and handy definitions and sidebars help engage younger readers and develop their interest. The special star wheel helps locate stars and planets from any location at any time of year. This is the third in Black Dog & Leventhal's successful series including The Story of the Orchestra and A Child's Introduction to Poetry.

    These tiny, ghostly particles are formed by the billions in stars and pass through us constantly, unseen, at almost the speed of light. Yet half a century after their discovery, we still know less about them than all the other varieties of matter that have ever been seen. In this engaging, concise volume, renowned scientist and popular writer Frank Close gives a vivid account of the discovery of neutrinos and our growing understanding of their significance, also touching on some speculative ideas concerning the possible uses of neutrinos and their role in the early universe. Close begins with the early history of the discovery of radioactivity by Henri Becquerel and Marie and Pierre Curie, the early model of the atom by Ernest Rutherford, and problems with these early atomic models, and Wolfgang Pauli's solution to that problem by inventing the concept of neutrino (named by Enrico Fermi, neutrino being Italian for little neutron). The book describes how the confirmation of Pauli's theory didn't occur until 1956, when Clyde Cowan and Fred Reines detected neutrinos, and reveals that the first natural neutrinos were finally detected by Reines in 1965 (before that, they had only been detected in reactors or accelerators). Close takes us to research experiments miles underground that are able to track neutrinos' fleeting impact as they pass through vast pools of cadmium chloride and he explains why they are becoming of such interest to cosmologists--if we can track where a neutrino originated we will be looking into the far distant reaches of the universe. In telling the story of the neutrino, Close offers a fascinating portrait of a strand of modern physics that sheds light on everything from the workings of the atom and the power of the sun.

     Never before have the wonders of our solar system been so immediately accessible to readers of all ages. Award-winning writer and broadcaster Marcus Chown combines science and history to visually and narratively explore our neighboring planets, dwarf planets, moons and asteroids, as well as all of the historical figures who aided in their discoveries. From the explosive surface of the sun to the frosty blue dunes on Mars; from the gargantuan rings of Saturn to the volcanoes of Io; from geological maps of bedrock on the Moon, to a simulation of what the Oort Cloud might look like, Solar System offers a window seat from which to view the beauty and magnificence of space.

    He sifts through over 30,000 survey submissions to uncover the world’s favourite number, and meets a mathematician who looks for universes in his garage. He attends the World Mathematical Congress in India, and visits the engineer who designed the first roller-coaster loop. Get hooked on math as Alex delves deep into humankind’s turbulent relationship with numbers, and reveals how they have shaped the world we live in.

    Global warming and associated climate change exists - but the role of humans in that change is entirely debatable. A little-known aspect of modern climate science is that the warming of the global atmosphere-ocean system over the last 100 years, even if entirely human-caused, has progressed at a rate that reduces the threat of future warming by 50% compared to the climate model projections. To the extent warming is partly natural (a possibility even the IPCC acknowledges), the future threat is reduced even further. This, by itself, should be part of the debate over energy policy – but it isn’t. Why? The news media, politicians, bureaucrats, rent-seekers, government funding agencies, and a “scientific-technological elite” (as President Eisenhower called it) have collaborated to spread what amounts to fake climate news. Exaggerated climate claims appear on a daily basis, sucking the air out of more reasoned discussions of the scientific evidence which are too boring for a populace increasingly addicted to climate change porn. Upon close examination it is found that the "97% of climate scientists agree" meme is inaccurate, misleading, and useless for decision-making; human causation of warming is simply assumed by the vast majority of climate researchers. In contrast to what many have been taught, there have been no obvious changes in severe weather, including hurricanes, tornadoes, droughts or floods. Despite an active 2018 wildfire season, there has actually been a long-term decrease in wildfire activity, although that will change if forest management practices are not implemented. Proxy evidence of past temperature and Arctic sea ice changes suggest warming and sea ice decline over the last 50 years or so is not out of the ordinary, and partly or even mostly natural. The Antarctic ice sheet isn't collapsing, but remains stable. The human component of sea level rise is shown to be, at most, only 1 inch per 30 years (25% of the observed rate of rise); and the latest evidence is that more CO2 dissolved in ocean water will be good for marine life, not harmful. Admittedly, continued emissions of CO2 from fossil fuel burning can be expected to cause (and probably has caused) some of our recent warming. But the Paris Agreement, even if extended through the end of the 21st Century, will have no measurable effect on global temperatures because the governments of the world realize humanity will depend upon fossil fuels for decades to come. Despite news reports and politicians' proclamations, international agreements to reduce CO2 emissions are all economic pain for no observable climate gain. What government-mandated reliance on expensive and impractical energy sources will do is increase energy poverty, and poverty kills. This downside to illusory efforts to “Save the Earth” is already being experienced in the UK and elsewhere. If people are genuinely concerned about humanity thriving, they must reject global warming alarmism. In terms of environmental regulation, the end result of the U.S. EPA's Endangerment Finding will be reduced prosperity for all, and climate gain for none. The good news is that there is no global warming crisis, and this book will inform citizens and help guide governments toward decisions which benefit the most people while doing the least harm.

    From Quantum Mechanics to Natural Selection, what we have instead are theories - ideas explain why things happen the way they do. We don't know for certain these are correct - no one ever saw the Big Bang - but with them we can paint beautiful, breathtaking pictures of everything from human behaviour to what the future may hold. Profiling the key scientists behind each theory, "30-Second Theories" presents each entry in a unique, eye-catching full-colour design, with thought-provoking extras and stylish illustrations. It is essential for anyone keen on expanding their mind with science's most thrilling ideas.

    Also discusses meteors, comets, eclipses, and other celestial objects.

    But despite the hype, Tyrannosaurus and the other tyrannosaurs are fascinating animals in their own right, and are among the best-studied of all dinosaurs.Tyrannosaurs started small, but over the course of 100 million years evolved into the giant carnivorous bone-crushers that continue to inspire awe in palaeontologists, screenplay writers, sci-fi novelists and the general public alike. Tyrannosaurus itself was truly impressive; it topped six tons, was more than 12m (40 feet) long, and had the largest head and most powerful bite of any land animal in history.The Tyrannosaur Chronicles tracks the rise of these dinosaurs, and presents the latest research into their biology, showing off more than just their impressive statistics - tyrannosaurs had feathers and fought and even ate each other. This book presents the science behind this research; it tells the story of the group through their anatomy, ecology and behaviour, exploring how they came to be the dominant terrestrial predators of the Mesozoic and, in more recent times, one of the great icons of biology.

    We just want to lie down, look up, and understand the heavens above. The National Geographic Backyard Guide to the Night Sky shows us how.Authors Howard Schneider and Patricia Daniels take an expert but easygoing approach that doesn’t overwhelm—it invites. Ten chapters cover everything a beginning stargazer will need to know, from understanding the phases of the moon to picking Mars out of a planetary lineup to identifying the kinds of stars twinkling in the constellations.Throughout the book, star charts and tables present key facts in an easy-to-understand format, sidebars and fact boxes present illuminating anecdotes and fun facts to sweep us swiftly into the stardust, and by the time we realize we’ve been schooled in solid science we’re too engrossed to object.Along with practical advice and hands-on tips to improve observation techniques, the guide includes an appendix full of resources—from books and web sites to lists of astronomy clubs and associations to local planetariums and museums. This indispensable book guides us on a new path into the night sky, truly one of the greatest shows on Earth.

    These fascinating, enigmatic creatures are a key lynchpin in the working of our planet. Without them the landscape, as well as every aisle in our supermarkets would look radically different. And we're not just talking about honey bees. There are more than 20,000 species of bee worldwide and only a handful make honey. Some live in colonies and others are solitary. We can all help protect them - and they desperately need protecting - but you can't save what you don't love. And you can't love what you don't know. The Good Bee is a celebration of this most vital and mysterious of nature's wizards. Here you'll discover the complexities of bee behaviour - as well as the bits that still baffle us - the part they play in the natural world, their relationship with us throughout history, how they are coming under threat and what we can all do about it.Beautifully produced, with hand-made illustrations throughout, it is a story for our times and a book to treasure.

    Humans have feared them for centuries, long considering them the assassins and pariahs of the natural world.Now, in Venomous, the biologist Christie Wilcox investigates and illuminates the animals of our nightmares, arguing that they hold the keys to a deeper understanding of evolution, adaptation, and immunity. She reveals just how venoms function and what they do to the human body. With Wilcox as our guide, we encounter a jellyfish with tentacles covered in stinging cells that can kill humans in minutes; a two-inch caterpillar with toxic bristles that trigger hemorrhaging; and a stunning blue-ringed octopus capable of inducing total paralysis. How do these animals go about their deadly work? How did they develop such intricate, potent toxins? Wilcox takes us around the world and down to the cellular level to find out.Throughout her journey, Wilcox meets the intrepid scientists who risk their lives studying these lethal beasts, as well as “self-immunizers” who deliberately expose themselves to snakebites. Along the way, she puts her own life on the line, narrowly avoiding being envenomated herself. Drawing on her own research, Wilcox explains how venom scientists are untangling the mechanisms of some of our most devastating diseases, and reports on pharmacologists who are already exploiting venoms to produce lifesaving drugs. We discover that venomous creatures are in fact keystone species that play crucial roles in their ecosystems and ours—and for this alone, they ought to be protected and appreciated.Thrilling and surprising at every turn, Venomous will change everything you thought you knew about the planet’s most dangerous animals.

    Bean Ultimate Book of Fly Fishing, an exciting full-color book for beginning and expert fly anglers alike. Brought to you in conjunction with L.L. Bean, America's most trusted name in outdoor apparel, and written by unquestioned experts in the field, this book is divided into four essential parts--General Fly Fishing, Fly Fishing for Bass, Fly Casting, and Fly Tying--and covers each with in-depth analysis in clear, easy-to-follow language. Learn about assembly of fly tackle; the biology of fish; natural fish foods and how to imitate them; safety techniques; bass flies; where to find bass; the eleven habits of highly effective fly casters; the basic four-part cast; the roll cast; the basics of fly tying; types of flies; the top ten most popular and successful fly patterns; and much more. The L.L. Bean Ultimate Book of Fly Fishing is the perfect gift for seasoned anglers looking to improve their skills, novices picking up a fly rod for the first time, and for all those who have ever dreamed of trading in their suits for a pair of waders.

    • Assess for yourself the stunning visual evidence presented in some 200 photographs. • Examine previously unpublished testimony from expert informants. • Discover new research undertaken by von Däniken after the opening up of previously inaccessible regions, such as the jungle city “Buritaca 200” in Colombia.

    A collection of fascinating facts, tidbits and quotes from the world of science and technology.This is a quick read, which you can easily scan through and find easy to read, short facts about the world around us, as well as some quotes from well known faces in science.Topics in the book include;BiologyChemistryPhysicsHealthSocietyEarth & EnvironmentAnimals & NatureSpaceTechnology & EngineeringQuotes