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.

    But do you always recognize what you see and hear? With this book, you'll get started. Birding for the Curious is a beginner course in birding for every nature and animal lover out there. With it, you'll learn what birding is all about, what birders do and how you can become one. You'll also learn how to:- Find more birds- Identify the birds you see- Attract more birds to your yard and feedersBirding for the Curious is the perfect gift for the nature-lover in your life, or an excellent introduction to birding for you. It won't be long before you can easily recognize and name the common birds in your area. With this book, you will enjoy nature at a whole new level.

    This brand new edition of the best-selling field guide from the RSPB is compact, informative and beautifully illustrated, and features 215 of the most common birds found in Britain.

    This book, which greatly expands the companion PBS series, tell the stories of the visionaries--based on eyewitness accounts and newly discovered archival material--who helped America win the space race with the first lunar landing fifty years ago. In 1961, President John F. Kennedy proposed the nation spend twenty billion dollars to land a man on the Moon before the end of the decade. For the first time, Chasing the Moon reveals the unknown stories of the fascinating individuals whose imaginative work across several decades culminated in America's momentous achievement. More than a story of engineers and astronauts, the Moon landing--now celebrating its 50th anniversary--grew out of the dreams of science fiction writers, filmmakers, military geniuses and rule-breaking scientists. Going in depth to explore their stories beyond the PBS series, writer/producer Robert Stone--called "one of our most important documentary film makers" by Entertainment Weekly--brings these important figures to brilliant life. They include: * Science fiction author Arthur C. Clarke, whose writing inspired some of the key players in the Moon race. A scientific paper he wrote in his twenties led to the U.S. beating Russia in one area of space: communications satellites.* Wernher von Braun, the Nazi military genius who oversaw Hitler's rocket weapons program. After working on ballistic missiles for the U.S. Army, he was recruited by NASA to manage the creation of the Saturn V Moon rocket. * Astronaut Frank Borman, commander of the first mission to circumnavigate the Moon, whose powerful testimony before Congress in 1967 decisively saved the U.S. lunar program from being cancelled. * Poppy Northcutt, a young mathematician who was the first woman to work in Mission Control. Her media exposure as a unique presence in this all-male world allowed her to stand up for equal rights for women and minorities.* Ed Dwight, an African-American astronaut candidate, recruited at the urging of the Kennedy White House to further the administration's civil rights agenda. But not everyone welcomed his inclusion.Setting these key players in the political, social, and cultural climate of the time, and including captivating photos throughout, Chasing the Moon focuses on the science and the history, but most importantly, the extraordinary individuals behind what was undoubtedly the greatest human achievement of the twentieth century.

    The text provides a wealth of features to help enhance student skill building, including new Visual Skills Check end-of-chapter questions that provide an opportunity for students to test their visual interpretation skills, new Cosmic Context Figures that help students synthesize key concepts and processes, and a new comprehensive visual overview of scale to help students explore the scale of time and space. The Sixth Edition has also been fully updated to include the latest astronomical observations, research, and theoretical developments. The text is supported by the most robust package of instructor. Two volumes of this text are also available:The Cosmic Perspective: The Solar System, Sixth Edition (includes Chapters 1-13, 24)The Cosmic Perspective: Stars, Galaxies, and Cosmology, Sixth Edition (includes Chapters 1-6, S2-S4, 14-24)

    This is a practical way to learn the aspects of language that you’ll actually need and use; from booking a hotel room to navigating a menu, Paul will effortlessly build your confidence and give you the tools to handle any holiday situation.His ‘word robbery’ will also help unlock the range of vocabulary you already know. By making a few simple tweaks, you’ll go from fantastic to fantastisch!Ideal for first-time learners or people who struggled in school, this book will help you absorb information quickly and efficiently, just like you did learning English as a child. Forget the way you used to be taught; this course guarantees you minimum effort and maximum success without the need for complex grammar rules or jargon. With thousands of satisfied customers, there’s never been a better time to learn.“There is nothing so complicated in foreign languages that it cannot be made simple.” Paul NobleA quick, easy and fun way to unlock your basic language skills. Perfect for beginners, this book will give you all the information you need to build basic conversations and get by on your travels.

    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

    Children are interested in things like where do certain animal come from and where does the rain come from. Children are also interested in the sky and how far away it is from the ground. Nature will also teach children how animals and insects get their food. This will force children to paint a picture of this in their mind. This picture will become real to children of all ages.

    You may find it for free on the web. Purchase of the Kindle edition includes wireless delivery.

    Binding is tight and in excellent condition.Buy with confidence!

    Since the process takes place in a closed system, insects and smell are controlled, making it ideal for urban or business settings. The process is very fast, with compost usually ready to be integrated into your soil or garden in around two weeks.While bokashi has enjoyed great popularity in many parts of the world, it is still relatively unknown in North America. From scraps to soil, Bokashi Composting is the complete, step-by-step, do-it-yourself guide to this amazing process, with comprehensive information covering:Background—the history, development, and scientific basis of the techniqueGetting started—composting with commercially available products or homemade systemsMaking your own—system plans and bokashi bran recipes using common materials and locally sourced ingredientsGrowing—improving your soil with fermented compost and bokashi "juice"This essential guide is a must-read for gardeners, homeowners, apartment dwellers, traditional composters, and anyone who wants a safe, simple, and convenient way to keep kitchen waste out of the landfill.Adam Footer is a permaculture designer with a focus on soil building, food forestry, cover crops, water conservation and harvesting, and natural farming. He is a tireless promoter of bokashi to maximize the recycling of food waste and runs the website bokashicomposting.com.

    Parker removes that pain by offering an opportunity to Get-to-Know the 'Master of Electricity,' to learn of his youth and upbringing, his early career, and of course his pivotal role in advancing the World into the Electrical Age! Turn these pages and enjoy the opportunity to learn history, but better yet to come to know Tesla better through Parker’s amazing ability to describe his life, his eccentricities and above all, his accomplishments; making this an enjoyable and interesting Quick-Read Biography. This Book also Comes with a FREE Gift!

    It sounds like a lot, but Earth’s atmosphere is smeared onto its surface in an alarmingly thin layer — 99 percent contained within eighteen miles. Yet within this fragile margin lies a magnificent realm — at once gorgeous, terrifying, capricious, and elusive. With his keen eye for identifying and uniting seemingly unrelated events, Chris Dewdney reveals to us the invisible rivers in the sky that affect how our weather works and the structure of clouds and storms and seasons, the rollercoaster of climate. Dewdney details the history of weather forecasting and introduces us to the eccentric and determined pioneers of science and observation whose efforts gave us the understanding of weather we have today.18 Miles is a kaleidoscopic and fact-filled journey that uncovers our obsession with the atmosphere and weather — as both evocative metaphor and physical reality. From the roaring winds of Katrina to Palladio’s architectural triumph, La Rotonda, Dewdney entertains as he gives readers a long overdue look at the very air we breathe.

    The invitation was open to all – to think beyond the human narrative and bear witness to the scale of the crisis. Letters of love, loss, hope and action were written by over 1000 people.Now published as a collection, Letters to the Earth brings together the voices of children and the public with authors, scientists and playwrights in the first creative project of its kind.Alongside letters from the public, Letters to the Earth received submissions from artist and peace activist Yoko Ono, actor Mark Rylance, writer and illustrator of The Lost Words Jackie Morris, novelist Anna Hope, environmental writer Jay Griffiths and Green Party MP Caroline Lucas . Together they are an invitation to consider how this existential threat affects the way we live our lives and the action we take.Lots of books consider the climate and ecological crisis from a political or scientific perspective, but Letters to the Earth is the first book to chronicle how humankind is collectively processing planetary crisis.