And with the advent of modern science, great minds have turned to testing and experimentation rather than mere thought as a way of approaching and grappling with some of the universe's most pressing and vexing dilemmas. So what is our latest picture of some of the most inexplicable features of the universe? What still remains to be uncovered? What are some of the next avenues of exploration for today's chemists, physicists, biologists, and astronomers? Pondering the answers to these and other questions is a great way to appreciate the grandeur and complexity of the world around you, better understand and discuss news and developments in science, and spark further interest in some of science's many exciting areas of study. "We know a lot about the universe. But there's even more that we don't know,"says astrophysicist and Professor Neil deGrasse Tyson, director of the Hayden Planetarium, an award-winning lecturer, and one of the world's foremost experts on the secrets of the universe. And his course The Inexplicable Universe: Unsolved Mysteries is the perfect gateway into this mind-bending and eye-opening subject. Each of these six self-contained lectures is a marvelous journey to the frontiers of the known (and unknown) universe and introduces you to tantalizing questions being addressed by the world's top scientists. Undeniably engaging and fascinating, this lecture series is a wonderful entrée to scientific pursuits that lie at the very heart of the history and nature of our universe. An Informed Scientific Conversation Central to The Inexplicable Universe is the way it takes you deep into hidden layers of the universe in a manner that is extremely accessible. Rather than a stern lecture given before a podium complete with confusing mathematics, Professor Tyson's lectures have the feel of an informed conversation that manages to be both thorough and easy to grasp. With each of the inexplicable mysteries he lays bare for you, Professor Tyson introduces you to the history behind it, lays out the science that has helped us grasp it, explains what researchers have discovered to date, and reveals what we have yet to discover. And while the topics explore subjects in everything from quantum mechanics to cosmology to string theory, you'll never feel overwhelmed by what you're learning. In fact, you're more likely to find yourself intrigued by just how much we know-and curious about what the near future will possibly reveal. Explore Fascinating Territory So what territory will you chart in this course? Here are some of the inexplicable ideas you'll investigate in these lectures. Neutrinos: Discovered in 1956, these fast-moving, ghostlike particles are made in abundance in the sun's core. They hardly interact with matter; it takes a light-year's worth of lead (5.8 trillion miles) to stop a neutrino. Not only that, but 65 billion neutrinos pass through every centimeter of your body that's facing the sun every second of every day. String theory: This astounding theory offers the hope of unifying all the particles and forces of physics. In the past several decades since the dawn of string theory, it's been imagined that all the fundamental particles we see and measure are just the manifestation in our dimension of strings vibrating in higher dimensions and at different frequencies. Quantum foam: This idea posits that when the fabric of space and time is so tightly curved on itself, space-time is less a smooth curve and more like the froth on a latte. In this state of matter and energy, quantum fluctuations can spawn entire universes, each with slightly different laws of physics within them! In addition, you'll also get a peek at what it would be like to travel through a black hole, ponder the possibility that life on Earth originated in debris from Mars, probe the supposed existence of multiple universes, and even imagine the possible end of the universe itself. A One-on-One Chat with a Renowned Science Educator Professor Tyson is renowned throughout the scientific community and the media for his vast knowledge, his penetrating insights, and his amazing ability to make even the most intimidating areas of science accessible, engaging, and-most of all-enjoyable. He brings the same inviting tone and sharp intellect to The Inexplicable Universe as he does to his range of media appearances on popular television programs. Due to its unique subject matter The Inexplicable Universe takes a highly visual approach. Many of the fascinating subjects in the course, such as black holes, string theory, and multiple universes are best demonstrated visually and Professor Tyson's lectures feature expertly crafted computer animations, explanatory diagrams, high resolution photographs, and other instructive visual elements. In order to better explain to you some of the grand, intricate ideas being discussed, Professor Tyson personally interacts with many of these animations and graphics using greenscreen technology. Please note that, due to the highly visual nature of The Inexplicable Universe, the course does not come with a guidebook. We did not believe a simple book could adequately convey the information in the course, and rather than make a guidebook that did not do the course justice, we decided to not offer one. However, we believe that you will be very excited by how we produced this course and will find it to be an enriching and fulfilling experience in your educational journey.

    Every concrete building and paved road on Earth, every computer screen and silicon chip, is made from sand. From Egypt's pyramids to the Hubble telescope, from the world's tallest skyscraper to the sidewalk below it, from Chartres' stained-glass windows to your iPhone, sand shelters us, empowers us, engages us, and inspires us. It's the ingredient that makes possible our cities, our science, our lives--and our future.And, incredibly, we're running out of it.The World in a Grain is the compelling true story of the hugely important and diminishing natural resource that grows more essential every day, and of the people who mine it, sell it, build with it--and sometimes, even kill for it. It's also a provocative examination of the serious human and environmental costs incurred by our dependence on sand, which has received little public attention. Not all sand is created equal: Some of the easiest sand to get to is the least useful. Award-winning journalist Vince Beiser delves deep into this world, taking readers on a journey across the globe, from the United States to remote corners of India, China, and Dubai to explain why sand is so crucial to modern life. Along the way, readers encounter world-changing innovators, island-building entrepreneurs, desert fighters, and murderous sand pirates. The result is an entertaining and eye-opening work, one that is both unexpected and involving, rippling with fascinating detail and filled with surprising characters.

    Randall never gave sleep much thought. That is, until he began sleepwalking. One midnight crash into a hallway wall sent him on an investigation into the strange science of sleep.In Dreamland, Randall explores the research that is investigating those dark hours that make up nearly a third of our lives. Taking readers from military battlefields to children’s bedrooms, Dreamland shows that sleep isn't as simple as it seems. Why did the results of one sleep study change the bookmakers’ odds for certain Monday Night Football games? Do women sleep differently than men? And if you happen to kill someone while you are sleepwalking, does that count as murder?This book is a tour of the often odd, sometimes disturbing, and always fascinating things that go on in the peculiar world of sleep. You’ll never look at your pillow the same way again.

    A gifted storyteller and consummate historian, Winchester sets the great blue sea's epic narrative against the backdrop of mankind's intellectual evolution, telling not only the story of an ocean, but the story of civilization. Fans of Winchester's Krakatoa, The Man Who Loved China, and The Professor and the Madman will love this masterful, penetrating, and resonant tale of humanity finding its way across the ocean of history.

    Using the latest genetic and anthropological data, Spencer Wells demonstrates that although humankind's decision to control our own food supply is what propelled us into the modern world, it had many downsides that we're just now beginning to recognize.

    Authors Peter Tompkins and Christopher Bird suggest that the most far-reaching revolution of the 20th century — one that could save or destroy the planet — may come from the bottom of your garden."Almost incredible ... bristles with plenty of hard facts and astounding scientific and practical lore." —S. K. Oberbeck, Newsweek“This fascinating book roams ... over that marvelous no man's land of mystical glimmerings into the nature of science and life itself." —Henry Mitchell, Washington Post Book World“If I can't ‘get inside a plant’ or ‘feel emanations’ from a plant and don't know anyone else who can. that doesn't detract one whit from the possibility that some people can and do. . . .According to The Secret Life of Plants, plants and men do inter-relate, with plants exhibiting empathetic and spiritual relationships and showing reactions interpreted as demonstrating physical-force connections with men. As my students say, ‘hey, wow!’"—Richard M. Klein, Professor of Botany, University of Vermont (in Smithsonian)

    From their diverse fragrances to their nasty deceptions, Russell proves that, where nature is concerned, "wonder is not only our starting point, it can also be our destination." Throughout this botanical journey, she reveals that the science behind these intelligent plants-how they evolved, how they survive, how they heal-is even more awe-inspiring than their fleeting beauty. Russell helps us imagine what a field of snapdragons looks like to a honeybee, and she introduces us to flowers that regulate their own temperature, attract pollinating bats, even smell like a rotting corpse. She also delves into cutting-edge research on everything from flower senses to their healing power. Long used to ease everything from depression to childbirth, flowers are now our main line of defense against childhood leukemia and the deadly Ebola virus. In this poetic rumination, which combines graceful writing with a scientist's clarity, Russell brings together the work of botanists around the globe, and illuminates a world at once familiar and exotic.

    This fascinating and groundbreaking work tells the remarkable story of the relationship between Americans and their trees across the entire span of our nation’s history. Like many of us, historians have long been guilty of taking trees for granted. Yet the history of trees in America is no less remarkable than the history of the United States itself—from the majestic white pines of New England, which were coveted by the British Crown for use as masts in navy warships, to the orange groves of California, which lured settlers west. In fact, without the country’s vast forests and the hundreds of tree species they contained, there would have been no ships, docks, railroads, stockyards, wagons, barrels, furniture, newspapers, rifles, or firewood. No shingled villages or whaling vessels in New England. No New York City, Miami, or Chicago. No Johnny Appleseed, Paul Bunyan, or Daniel Boone. No Allied planes in World War I, and no suburban sprawl in the middle of the twentieth century. America—if indeed it existed—would be a very different place without its millions of acres of trees. As Eric Rutkow’s brilliant, epic account shows, trees were essential to the early years of the republic and indivisible from the country’s rise as both an empire and a civilization. Among American Canopy’s many fascinating stories: the Liberty Trees, where colonists gathered to plot rebellion against the British; Henry David Thoreau’s famous retreat into the woods; the creation of New York City’s Central Park; the great fire of 1871 that killed a thousand people in the lumber town of Peshtigo, Wisconsin; the fevered attempts to save the American chestnut and the American elm from extinction; and the controversy over spotted owls and the old-growth forests they inhabited. Rutkow also explains how trees were of deep interest to such figures as George Washington, Thomas Jefferson, Benjamin Franklin, Teddy Roosevelt, and FDR, who oversaw the planting of more than three billion trees nationally in his time as president. As symbols of liberty, community, and civilization, trees are perhaps the loudest silent figures in our country’s history. America started as a nation of people frightened of the deep, seemingly infinite woods; we then grew to rely on our forests for progress and profit; by the end of the twentieth century we came to understand that the globe’s climate is dependent on the preservation of trees. Today, few people think about where timber comes from, but most of us share a sense that to destroy trees is to destroy part of ourselves and endanger the future. Never before has anyone treated our country’s trees and forests as the subject of a broad historical study, and the result is an accessible, informative, and thoroughly entertaining read. Audacious in its four-hundred-year scope, authoritative in its detail, and elegant in its execution, American Canopy is perfect for history buffs and nature lovers alike and announces Eric Rutkow as a major new author of popular history.

    After the Ice is the story of this momentous period--one in which a seemingly minor alteration in temperature could presage anything from the spread of lush woodland to the coming of apocalyptic floods--and one in which we find the origins of civilization itself.Drawing on the latest research in archaeology, human genetics, and environmental science, After the Ice takes the reader on a sweeping tour of 15,000 years of human history. Steven Mithen brings this world to life through the eyes of an imaginary modern traveler--John Lubbock, namesake of the great Victorian polymath and author of Prehistoric Times. With Lubbock, readers visit and observe communities and landscapes, experiencing prehistoric life--from aboriginal hunting parties in Tasmania, to the corralling of wild sheep in the central Sahara, to the efforts of the Guila Naquitz people in Oaxaca to combat drought with agricultural innovations.Part history, part science, part time travel, After the Ice offers an evocative and uniquely compelling portrayal of diverse cultures, lives, and landscapes that laid the foundations of the modern world.

    A New York Times Notable Book of 2011. One of NPR's Best Books of 2011. One of Janet Maslin's Ten Picks for 2011. When the writer Donovan Hohn heard of the mysterious loss of thousands of bath toys at sea, he figured he would interview a few oceanographers, talk to a few beachcombers, and read up on Arctic science and geography. But questions can be like ocean currents: wade in too far, and they carry you away. Hohn's accidental odyssey pulls him into the secretive world of shipping conglomerates, the daring work of Arctic researchers, the lunatic risks of maverick sailors, and the shadowy world of Chinese toy factories. Moby-Duck is a journey into the heart of the sea and an adventure through science, myth, the global economy, and some of the worst weather imaginable. With each new discovery, Hohn learns of another loose thread, and with each successive chase, he comes closer to understanding where his castaway quarry comes from and where it goes. In the grand tradition of Tony Horwitz and David Quammen, Moby-Duck is a compulsively readable narrative of whimsy and curiosity.

    He's a man on a mission to save the world's most endangered plants from destruction and thieves hunting for wealthy collectors. He is a plant messiah.From the planet's tiniest waterlily - the Nymphaea thermarum - to Huarango trees with roots over 50 metres long, Carlos has a miraculous ability to bring breathtakingly beautiful plants back from the brink of extinction. He has travelled to the most remote and dangerous parts of the world - from the mountains of Peru to isolated Indian Ocean islands to the deepest Australian outback - in search of the rarest exotic species. Then, back in the Tropical Nursery at Kew, he uses pioneering, left-field techniques to help them grow.Now he's here to spread the gospel. The Plant Messiah is the inspirational story of a man who has devoted - and risked - his life to save incredible species, all in the name of making this Earth a greener and happier place. Amen to that.

    scientific community has long led the world in research on such areas as public health, environmental science, and issues affecting quality of life. Our scientists have produced landmark studies on the dangers of DDT, tobacco smoke, acid rain, and global warming. But at the same time, a small yet potent subset of this community leads the world in vehement denial of these dangers.Merchants of Doubt tells the story of how a loose-knit group of high-level scientists and scientific advisers, with deep connections in politics and industry, ran effective campaigns to mislead the public and deny well-established scientific knowledge over four decades. Remarkably, the same individuals surface repeatedly—some of the same figures who have claimed that the science of global warming is "not settled" denied the truth of studies linking smoking to lung cancer, coal smoke to acid rain, and CFCs to the ozone hole. "Doubt is our product," wrote one tobacco executive. These "experts" supplied it.Naomi Oreskes and Erik M. Conway, historians of science, roll back the rug on this dark corner of the American scientific community, showing how ideology and corporate interests, aided by a too-compliant media, have skewed public understanding of some of the most pressing issues of our era.

    James Hansen—the nation’s leading scientist on climate issues—speaks out for the first time with the full truth about global warming: The planet is hurtling even more rapidly than previously acknowledged to a climatic point of no return.Although the threat of human-caused climate change is now widely recognized, politicians have failed to connect policy with the science, responding instead with ineffectual remedies dictated by special interests. Hansen shows why President Obama’s solution, cap-and-trade, which Al Gore has signed on to, won’t work; why we must phase out all coal; and why 350 parts per million of carbon dioxide in the atmosphere is a goal we must achieve if our children and grandchildren are to avoid global meltdown and the horrific storms of the book’s title. This urgent manifesto bucks conventional wisdom (including the Kyoto Protocol) and is sure to stir controversy, but Hansen—whose climate predictions have come to pass again and again, beginning in the 1980s when he first warned Congress about global warming—is the single most credible voice on the subject worldwide.Hansen paints a devastating, all-too-realistic picture of what will happen in the near future, mere years and decades from now, if we follow the course we’re on. But he is also an optimist, showing that there is still time to do what we need to save the planet. Urgent, strong action is needed, and this book will be key in setting the agenda going forward to create a groundswell, a tipping point, to save humanity—and our grandchildren—from a dire fate more imminent than we had supposed.

    The distressing decline of sea turtles in Pacific waters and their surprising recovery in the Atlantic illuminate what can go both wrong and right from our interventions, and teach us the lessons that can be applied to restore health to the world's oceans and its creatures. As Carl Safina's compelling natural history adventure makes clear, the fate of the astonishing leatherback turtle, whose ancestry can be traced back 125 million years, is in our hands.Writing with verve and color, Safina describes how he and his colleagues track giant pelagic turtles across the world's oceans and onto remote beaches of every continent. As scientists apply lessons learned in the Atlantic and Caribbean to other endangered seas, Safina follows leatherback migrations, including a thrilling journey from Monterey, California, to nesting grounds on the most remote beaches of Papua, New Guinea. The only surviving species of its genus, family, and suborder, the leatherback is an evolutionary marvel: a "reptile" that behaves like a warm-blooded dinosaur, an ocean animal able to withstand colder water than most fishes and dive deeper than any whale.In his peerless prose, Safina captures the delicate interaction between these gentle giants and the humans who are finally playing a significant role in their survival.

    Half of all species could disappear by the end of the century, and scientists now concede that most of America’s endangered animals will survive only if conservationists keep rigging the world around them in their favor. So Mooallem ventures into the field, often taking his daughter with him, to move beyond childlike fascination and make those creatures feel more real. Wild Ones is a tour through our environmental moment and the eccentric cultural history of people and wild animals in America that inflects it—from Thomas Jefferson’s celebrations of early abundance to the turn-of the-last-century origins of the teddy bear to the whale-loving hippies of the 1970s. In America, Wild Ones discovers, wildlife has always inhabited the terrain of our imagination as much as the actual land.The journey is framed by the stories of three modern-day endangered species: the polar bear, victimized by climate change and ogled by tourists outside a remote northern town; the little-known Lange’s metalmark butterfly, foundering on a shred of industrialized land near San Francisco; and the whooping crane as it’s led on a months-long migration by costumed men in ultralight airplanes. The wilderness that Wild Ones navigates is a scrappy, disorderly place where amateur conservationists do grueling, sometimes preposterous-looking work; where a marketer maneuvers to control the polar bear’s image while Martha Stewart turns up to film those beasts for her show on the Hallmark Channel. Our most comforting ideas about nature unravel. In their place, Mooallem forges a new and affirming vision of the human animal and the wild ones as kindred creatures on an imperfect planet.With propulsive curiosity and searing wit, and without the easy moralizing and nature worship of environmental journalism’s older guard, Wild Ones merges reportage, science, and history into a humane and endearing meditation on what it means to live in, and bring a life into, a broken world.