検索キーワード： 制作 "Tantor Audio" 地球科学

Why do compass needles point north - but not quite north? What guides the migration of birds, whales, and fish across the world's oceans? How is Earth able to sustain life under an onslaught of solar wind and cosmic radiation? For centuries, the world's great scientists have grappled with these questions, all rooted in the same phenomenon: Earth's magnetism. Over 2000 years after the invention of the compass, Einstein called the source of Earth's magnetic field one of greatest unsolved mysteries of physics.

In Storms of My Grandchildren, 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 Hansen was Al Gore's science adviser for the 2006 documentary An Inconvenient Truth, his recent data shows that our situation is even more dire today.

Chris Mooney, author of The Republican War on Science and one of the leading young environmental journalists and bloggers working today, immerses listeners in the world of those who study hurricanes. What was once an arcane branch of meteorology (itself an arcane science) has become embroiled in one of the most politicized and hotly contested debates in American science: whether or not the recent hurricane disasters, culminating in Katrina, are connected to global warming.

The open ocean, far from the shore and miles above the seafloor, is a vast and formidable habitat that is home to the most abundant life on our planet, from giant squid and jellyfish to anglerfish with bioluminescent lures that draw prey into their toothy mouths. Into the Great Wide Ocean takes listeners inside the peculiar world of the seagoing scientists who are providing tantalizing new insights into how the animals of the open ocean solve the problems of their existence.

The Pitchfork Ranch is more than another dusty homestead tucked away in a corner of the Southwest. It is a place with a story to tell about the most pressing crisis to confront humankind. It is a place where one couple is working every day to right decades of wrongs. It is a place of inspiration and promise. It is an invitation to join the struggle for a better planet. Restoring the Pitchfork Ranch tells the story of a decades-long habitat restoration project in southwestern New Mexico.

Xia, a Pulitzer Prize finalist, investigates the impacts of engineered landscapes, the market pressures of development, and the ecological activism and political scrimmages that have carved our contemporary coastline—and foretell even greater changes to our shores. From the beaches of the Mexican border up to the sheer-cliffed North Coast, the voices of Indigenous leaders, community activists, small-town mayors, urban engineers, and environmental scientists commingle. Together, they chronicle the challenges and urgency of forging a climate-wise future.

More than 10,000 years ago spectacularly large mammals roamed the pampas and jungles of South America. This book tells the story of these great beasts during and just after the Pleistocene, the geological epoch marked by the great ice ages. Megafauna describes the history and way of life of these animals, their comings and goings, and what befell them at the beginning of the modern era and the arrival of humans.

Four geologists and two mountain guides face the brutal beauty of West Antarctica eight hundred miles from the United States main base. Their search reaches far into the treacherous mountains of Marie Byrd Land. Over six weeks of living in tents and traveling by snowmobile, the team endures endless cold and furious blizzards. They cross ice fields and hidden crevasses, which one of the team learns about the hard way.

Signed on November 24, 1922, the Colorado River Compact is body of laws colloquially called the "Law of the River" that governs how human beings use water from the river system dubbed the "American Nile." No fewer than forty million people have come to rely on the Colorado River system in modern times-a system immersed in an unprecedented, unrelenting megadrought for more than two decades. Attempting to navigate this "new normal," policymakers are negotiating new management rules for the river system, a process coinciding with the compact's centennial that must be completed by 2026.

More than half a billion years ago, our world was completely covered by glaciers, a "Snowball Earth" that persisted for millions of years. Incredibly, this unimaginable cold led to the remarkable diversification of life on earth known as the Cambrian explosion. With a geologist's eye and a knack for storytelling, Graham Shields explores when and how such inhospitable conditions enabled animals to evolve, radiate, and diversify into our earliest ancestors.

A straightforward and fact-based exploration of how weather happens, how it relates to climate, and how science answers major questions about Earth as a system.

In this entertaining book, Donald R. Prothero explores the astonishing connections between climate and life through the ages, telling the remarkable stories of the scientists who made crucial discoveries. Journeying through the intertwined evolution of climate and life, he tackles questions such as: Why do we have phytoplankton to thank for the air we breathe? What kind of climate was necessary for the rise of the dinosaurs-or the mammals, their successors? When and how have climatic changes caused mass extinctions?

Southern Rivers is a thoroughly crafted exploration of the perilous state of the Southeast's rivers and the urgent need to safeguard their vitality. The region's rivers are the epicenter of North American freshwater biodiversity and are the top global hotspot for important aquatic animals, including mussels, turtles, snails, crayfish, and fish.

You've heard of Pangea, the single landmass that broke apart some 175 million years ago to give us our current continents, but what about its predecessors, Rodinia or Columbia? These "supercontinents" from Earth's past provide evidence that land repeatedly joins and separates. While scientists debate what that next supercontinent will look like—and what to name it—they all agree: one is coming.

Own the room with this hilarious collection of fact-tastic myth-busters and jaw-dropping trivia exploring science, history, sport and lesser-known facts from across the universe. Did you know that the Moon has a Bishop? That ostriches DON'T bury their heads in the sand? And that powdered rice was used as cement in the Great Wall of China? What do souls weigh? What can't 60% of the human population smell? And what on earth is rhinotillexomania? And the big one . . . are farts actually invisible? The answers to these questions are all here.

The world's oceans are changing at a drastic pace. In response, the people who know the ocean most intimately are taking action for the sake of our shared future. Community scientists track species in California tidepools. Researchers dive into the waters around Sydney to replant kelp forests. Scientists and First Nations communities collaborate to restore clam gardens in the Pacific Northwest.