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Description
From the first agricultural settlements, to the industrial revolution, to agribusiness and widespread urbanization, humans have been transforming the environment for thousands of years. But now, with rain forests disappearing at an appalling rate, pollution on the rise, and the world's population reaching truly astronomical proportions, how will the Earth survive? In this program, Lester Brown, president of Worldwatch Institute; academic experts;...
Description
Changing climate probably played the decisive role in drawing hominids out of the trees, up on their hind legs, and off in search of food whose supply had been dispersed by the replacement of rainforests by grasslands. Migrations were motivated by the search for food; during ice ages, when sea levels dropped, new areas became accessible and populations spread. Links between climatic changes and emerging civilizations have also been postulated; the...
Description
This program theorizes about what would happen if people disappeared from Earth. We explore what may happen to the weapons of war, including nuclear submarines and the USS Missouri. Some dairy cows maybe survive and adapt to life on the American plains, while bison will thrive in the same habitat. We also explore the fate of Brother Island near Manhattan, which was abandoned by people 45 years ago.
Description
Fast-tracked by the FDA, GMOs-genetically modified organisms-have already deeply penetrated America's food supply. Are they safe? In this program, NewsHour correspondent Paul Solman looks at both sides of the GMO controversy. Agricultural law professor Neil Hamilton, a nutrition consultant, and an independent corn farmer counsel a conservative approach, while economist Dermot Hayes, of Iowa State University, reacts to the unfairness of anti-GMO rhetoric,...
Description
This ABC News program begins with an overview of the controversial new type of crop hybridization known as genetic modification, exploring why the technology has panicked European consumers and has left many American farmers with mixed feelings. Then, correspondent John Donvan moderates a vigorous discussion between Secretary of Agriculture Dan Glickman; Val Giddings, Vice President of Food and Agriculture at the Biotechnology Industry Organization;...
Description
The five extinctions that have impacted the Earth over the past 400 million years-the Ordovician-Silurian, Late Devonian, Permian-Triassic, End Triassic, and Cretaceous-Tertiary-may be set to include another one on a massive scale. This alarming program assesses the extent to which Homo sapiens is provoking the planet's sixth extinction. According to scientists, wholesale destruction of habitats by humans contributes to the disappearance of 27,000...
Description
This program theorizes about what would happen if people disappeared from Earth and how this would play out in Boston and Houston. The fate of embalmed, mummified, and cryogenically frozen bodies is discussed. We also see what happens to the Statue of Liberty and the Sistine Chapel. Finally, we look at the Japanese island of Hashima, which was abandoned by people 35 years ago.
Description
Millions of fish died. People experienced memory loss, confusion, and respiratory, gastrointestinal, and skin problems. And the press had a field day. This program provides an in-depth retrospective on the Pfiesteria hysteria that engulfed much of the mid-Atlantic region in 1997. Interviews with a wide range of concerned parties-aquatic botanists, an ecologist, an epidemiologist, a neuropsychologist, a government official, journalists, local fishermen,...
Description
In the 1600s, New York City's Bronx River was a drinking water source and a sylvan haven for beaver, oysters, and herring. It became blighted as urbanization progressed, transforming into an industrial power source, an open sewer, and a garbage dump. Today, landscape ecologists are reconstructing the waterway's ecological history as a reference point for its restoration effort. In this science bulletin, conservation teams coax new life into the Bronx...
Description
This Science Screen Report explains how biologists help endangered species. It highlights captive breeding techniques that have strengthened populations of Malayan tapirs and southern white rhinos; it also examines the artificial insemination of giant pandas and the teaching of survival skills to orphaned orangutans. Emphasizing that humans can learn and benefit from these experiences-for instance, several innovative ways to communicate with animals...
Description
The technology of cloning has raised a host of moral, ethical, and religious questions, and this program examines many of them. The "dangers" of cloning, from shrinking gene pools, to the development of a "super race," to fears that cloned DNA could introduce genetic flaws into the population, are examined. A theologian discusses how cloning changes our notion of soul. Harold Shapiro, chairman of the National Bioethics Advisory Commission, comments...
Description
Now that we know that genes from different species are interchangeable, biotechnology is beginning to engineer superanimals-and patenting them. Behold the geep, part goat, part sheep, engineered to take advantage of the best traits of each. What are the scientific goals? And the social controls? This program looks at how some women are selecting the genetic profiles of the children they choose to bear, and at the ethical and economic dilemmas intrinsic...
Description
This program theorizes about what would happen to seaside cities, including Seattle, if people disappeared from Earth. The fate of landmarks, including the Burj Al Arab Hotel in Dubai and Moscow's St. Basil's Cathedral, is explored. The program also examines in detail the buildings in New Orleans that were damaged by Hurricane Katrina and ultimately abandoned.
Description
Beginning with Dolly, this program explores the successes of cloning animals and specialized cells, the use of cultured neurons to combat degenerative diseases such as Parkinson's, and the future of tissue engineering, as well as the ethical dilemmas attending the science of genetics. Researchers from Roslin Institute, including Ian Wilmut; Robert Winston, professor of fertility studies at the University of London; and biologist/author Colin Tudge...
17) Flood control
Description
The lowland basis around Los Angeles contains the most extensive water conservation and flood control system in the world. In 1917, work began on a system of dams and improved channels to control the floodwaters entering the basin. This program looks at the way this system was built and the problems entailed in its design and construction.
Description
For nearly a hundred years, asbestos fibers were woven into the very fabric of commercial and residential life in North America and Europe-despite an industry awareness that asbestos dust is extremely dangerous. This program featuring Geoffrey Tweedale, author of Magic Mineral to Killer Dust, and environmental consultant Barry Castleman illuminates the dark history of flame-retardant asbestos: asbestosis fatalities, efforts by the asbestos industry...
Description
Greenpeace International's command ship Arctic Sunrise was seized by the Russian government after activists tried to board an offshore oil platform to protest drilling for fossil fuels in the fragile environment of the Arctic. In this edition of Moyers & Company, Greenpeace International Executive Director Kumi Naidoo joins Bill to discuss the fate of the Arctic Sunrise crew, the politics of climate change, and the urgency of environmental activism....
Description
In Tanzania it's estimated that more than 60 elephants are killed by poachers every day, the ivory from the tusks smuggled out of Dar es Salaam and sent off to markets in places like China, where a demand for ivory trinkets has exploded among the new middle class. Both Tanzania and Kenya vow to stamp out poaching, but enormous profits from the slaughter have corrupted politicians and law enforcement officials alike. This program charts the rapid decline...
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