Resultados para "Peligro" en Medioambiente

Our insatiable demand for animals - for jewelry, pets, medicine, meat, trophies, and fur - is driving a worldwide poaching epidemic, threatening the continued existence of countless species. Rachel Nuwer, an award-winning science journalist with a background in ecology, takes listeners on a narrative journey to the front lines of the trade: to killing fields in Africa, traditional medicine black markets in China, and wild meat restaurants in Vietnam. Through exhaustive first-hand reporting that took her to 10 countries, Nuwer explores the forces currently driving the demand.

A young man is murdered for his prized pet fish. An Asian tycoon buys a single specimen for $150,000. Meanwhile, a pet detective chases smugglers through the streets of New York. Delving into an outlandish realm of obsession, paranoia, and criminality, The Dragon Behind the Glass tells the story of a fish like none other: a powerful predator dating to the age of the dinosaurs.

Yes, the world faces substantial environmental challenges - climate change, pollution, and extinction. But the surprisingly good news is that we have solutions to these problems. In the past 50 years, a remarkable number of environmental problems have been solved while substantial progress is ongoing on others. The Optimistic Environmentalist chronicles these remarkable success stories. Endangered species - from bald eagles to gray whales - pulled back from the precipice of extinction.

Most of us have heard of such popular butterflies as the Monarch or Painted Lady. But what about the Fender's Blue? Or the St. Francis' Satyr? Because of their extreme rarity, these butterflies are not well-known, yet they are remarkable species with important lessons to teach us. The Last Butterflies spotlights the rarest of these creatures - some numbering no more than what can be held in one hand.

Transporting listeners into the field with scientists tackling these profound challenges, Emma Marris tells the affecting and inspiring stories of animals around the globe - from Peruvian monkeys to Australian bilbies, rare Hawai'ian birds to majestic Oregon wolves. And she offers a companionable tour of the philosophical ideas that may steer our search for sustainability and justice in the non-human world. Revealing just how intertwined animal life and human life really are, Wild Souls will change the way we think about nature-and our place within it.

Unfair Game features the shocking results of a new inquiry Lord Ashcroft has carried out into South Africa’s lion business. He shows how tourists are unwittingly being used to support the abuse of lions he details how lions are being tranquilised and then hunted in enclosed spaces he urges the British government to ban imports of captive-bred lion trophies and he demonstrates why Asia’s insatiable appetite for lion bones has become a multi-million-dollar business linked to criminality and corruption which now underpins South Africa's captive lion industry.

With a shrinking wilderness and global warming, the future of the wolverine is uncertain. The Wolverine Way reveals the natural history of this species and the forces that threaten its future, engagingly told by Douglas Chadwick, who volunteered with the Glacier Wolverine Project. This five-year study in Glacier National Park—which involved dealing with blizzards, grizzlies, sheer mountain walls, and other daily challenges to survival—uncovered key missing information about the wolverine's habitat, social structure, and reproduction habits.

Biodiversity, the diversity of life, is not only fascinating and beautiful, it is the engine of all the world's natural cycles, and the source of many of the resources on which humanity depends. Concern about biodiversity conservation is, therefore, not merely the preoccupation of a few enthusiastic naturalists—it is the lifeline business of everybody.

The news about wildlife is dire—more than 900 species have been wiped off the planet since industrialization. Against this bleak backdrop, however, there are also glimmers of hope and crucial lessons to be learned from animals that have defied global trends toward extinction: bears in Italy, bison in North America, whales in the Atlantic. These populations are back from the brink, some of them in numbers unimaginable in a century. How has this happened? In crisp, transporting prose, Christopher Preston reveals the mysteries and challenges at the heart of these resurgences.

Twice declared extinct, North America's most endangered mammal species, the black-footed ferret (BFF), is making a comeback thanks to an evolving conservation regimen at more than thirty reintroduction sites across the continent. Lawrence Lenhart lingers at one such site in his proverbial backyard, the Aubrey Valley in northern Arizona.

Koalas regularly appeared in Australian biologist Danielle Clode's backyard, but it was only when a bushfire threatened that she truly paid them attention. In vivid, descriptive prose, Clode embarks on a delightful and surprising journey through evolutionary biology, natural history, and ecology to understand where these enigmatic animals came from and what their future may hold. She begins her search with the fossils of ancient giant koalas, delving into why the modern koala has become the lone survivor of a once-diverse family of uniquely Australian marsupials.

In 2006, vaquita, a diminutive porpoise making its home in the Upper Gulf of California, inherited the dubious title of world's most endangered marine mammal. When international crime cartels discovered a lucrative trade in the swim bladders of totoaba, illegal gillnetting went rampant, and now the lives of the few remaining vaquitas hang in the balance. Author Brooke Bessesen takes us on a journey to Mexico's Upper Gulf region to uncover the story. She interviewed townspeople, fishermen, scientists, and activists, teasing apart a complex story filled with villains and heroes.

Eighteen years ago, Stanford MBA Michele Raffin pulled off the road to help an injured dove, a momentary impulse that ignited in her a fervent commitment to saving vulnerable bird species. Today, her suburban home plays host to Pandemonium Aviaries, one of the largest avian rescue sanctuaries and endangered breeding facilities in the country, with a maze of 54 individual aviaries that house over 40 species, 14 of which are listed as threatened with extinction.

Naturalist Joe Hutto’s latest adventures in wildlife observation take him to Wyoming’s Wind River Mountains. Hutto is living in a tent at 12,000 feet, where blizzards occur in July and where human wants become irrelevant—and human needs can become a matter of life and death—to study the Rocky Mountain bighorn sheep.

Beavers, those icons of industriousness, have been gnawing down trees, building dams, shaping the land, and creating critical habitat in North America for at least a million years. Once one of the continent's most ubiquitous mammals, they ranged from the Atlantic to the Pacific, and from the Rio Grande to the edge of the northern tundra. Wherever there was wood and water, there were beavers - 60 million (or more) - and wherever there were beavers, there were intricate natural communities that depended on their activities.

Emmy Award - winning filmmaker, writer, and naturalist Joe Hutto has done it again. Touching the Wild is the enchanting story about one man who has lived with a herd of mule deer in the Wind River mountains of Wyoming for almost seven years. Why, you may ask, would a person choose to do such a thing? His response: how could you not? For Joe Hutto, close proximity to wild things is irresistible. In Illumination in the Flatwoods he unveiled the secret lives of the wild turkey to great critical acclaim.

America's Great Plains once possessed one of the grandest wildlife spectacles of the world, equaled only by such places as the Serengeti, the Masai Mara, or the veld of South Africa. Pronghorn antelope, gray wolves, bison, coyotes, wild horses, and grizzly bears: less than 200 years ago these creatures existed in such abundance that John James Audubon was moved to write "it is impossible to describe or even conceive the vast multitudes of these animals".

In Unnatural Companions, journalist Peter Christie issues a call to action for pet owners. If we hope to reverse the alarming trend of wildlife decline, pet owners must acknowledge the pets-versus-conservation dilemma and concede that our well-fed and sheltered cats too often prey on small backyard wildlife and seemingly harmless reptiles released into the wild might be the next destructive invasive species. We want our pets to eat nutritionally healthy food, but how does the designer food we feed them impact the environment?

Rat Island rises from the icy gray waters of the Bering Sea, a mass of volcanic rock covered with tundra, midway between Alaska and Siberia. Once a remote sanctuary for enormous flocks of seabirds, the island gained a new name when shipwrecked rats colonized, savaging the nesting birds by the thousands. Now, on this and hundreds of other remote islands around the world, a massive - and massively controversial - wildlife rescue mission is underway.

When it comes to the natural world, Australia is home to a disproportionately large share of the world's riches. That means we Australians are caretakers of a unique natural heritage in a land which tolerates few mistakes. So how are we doing? In Quarterly Essay 48 Tim Flannery says: we're often failing nature. In the clash between money and conservation, money usually wins.