Report
by rhett butler A new imaging system that uses a suite of airborne sensors is capable of providing detailed, three-dimensional pictures of tropical forests — including the species they contain and the amount of CO2 they store — at astonishing speed. These advances could play a key role in preserving the world’s beleaguered rainforests.
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Report
by elizabeth grossmanNew studies have underscored the potentially harmful health effects of the most widely used flame retardants, found in everything from baby blankets to carpets. Health experts are now calling for more aggressive action to limit these chemicals, including cutting back on highly flammable, petroleum-based materials used in many consumer products.
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e360 Video Report
Photographer Pete McBride traveled along the Colorado River from its source high in the Rockies to its historic mouth at the Sea of Cortez. In a
Yale Environment 360 video, he documents how increasing water demands have transformed the river that is the lifeblood for an arid Southwest.
Watch the video
Report
by fred pearceThe draining and burning of peat bogs is a major global source of CO2 emissions. Now, a pilot project in Russia — where wildfires burned vast areas of dried-out bogs last summer — is looking to re-flood and restore tens of thousands of acres to their natural state.
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Analysis
by carl haubA central tenet of demography is that global population will peak at 9 to 10 billion this century and then gradually decline as poorer countries develop. But that assumption may be overly optimistic — and if it is, population will continue to rise, placing enormous strains on the environment.
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Analysis
by caroline fraserScientists have recently begun to understand the vital role played by top predators in ecosystems and the profound impacts that occur when those predators are wiped out. Now, researchers are citing new evidence that shows the importance of lions, wolves, sharks, and other creatures at the top of the food chain.
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Report
by rhett butler and jeremy hanceAs global agricultural companies turn to Africa, a U.S. firm is planning a massive oil palm plantation in Cameroon that it says will benefit local villagers. But critics argue that the project would destroy some of the key remaining forests in the West African nation and threaten species-rich reserves.
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Opinion
by christian schwägerlThere are striking similarities between the current economic and ecological crises — both involve indulgent over-consumption and a failure to consider the impacts on future generations. But it’s not too late to look to new economic and environmental models and to dramatically change course.
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Report
by dave levitanDaunted by high up-front costs, U.S. homeowners continue to shy away from residential solar power systems, even as utility-scale solar projects are taking off. But with do-it-yourself kits and other innovative installation approaches now on the market, residential solar is having modest growth.
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The European Union says crude oil extracted from Alberta’s tar sands
should be ranked as a dirtier fuel source than oil tapped from conventional oil wells, a move that could effectively ban the import of the controversial oil. The European Commission endorsed a measure that would essentially rate fossil fuels based on the CO2 emited during extraction, refining, and combustion. The EU has proposed that tar sands oil be ascribed a greenhouse gas value of 107 grams per megajoule of fuel, compared with 87.5 grams for ordinary crude oil. “With this measure, we are sending a clear signal to fossil fuel suppliers,” said Connie Hedegaard, the EU's climate change commissioner. “As fossil fuels will be a reality in the foreseeable future, it’s important to give them the right value.” Such a ratings system may eventually be applied to natural gas extracted from shale oil formations. The exploitation of Alberta’s tar sands has generated increasing protest from environmental groups. In addition to destroying large swaths of forest, the extraction and processing of the sludgy bituminous material typically requires more energy and water than conventional production. Canadian officials and petroleum industry leaders vowed to fight the measure, calling it a “stigmatization” of a fuel source found only in Alberta and Saskatchewan.
A new study says the explosive growth in China’s construction sector
is now driving the country’s steep increase in carbon emissions, reversing a long-term trend in which consumption and exports were the dominant factors. According to the study, published in journal
Environmental Science & Technology, increased capital investment in infrastructure projects has fueled an expansion of the energy-intensive construction industry in recent years. Until 2002, the most critical factor driving Chinese CO2 emissions was the growth of consumption and factory production for exports, said Jan C. Minx of the Potsdam Institute for Climate Impact Research and lead author of the study. From 2002 to 2007, however, researchers found that improved energy efficiency actually offset the rise in emissions from increased consumption. But emissions continued to skyrocket during that period — with the average annual CO2 emissions growth rivaling the UK’s total CO2 emissions— largely because of growth in the construction sector and related energy-intensive products such as steel and concrete. “Emissions grow faster and faster because CO2 intensive sectors linked to the building of infrastructure have become more and more dominant,” Minx said.
A bipartisan panel of scientists, former government officials, and energy experts is urging the U.S. government to
explore the potential benefits, costs, and risks of geoengineering schemes to slow global warming.
In a new report, the 18-member panel convened by the Washington, D.C.-based Bipartisan Policy Center concedes that the use of technology to slow or reverse global warming — such as scattering light-reflecting aerosols into the atmosphere or seeding the oceans with iron to trigger CO2-absorbing algae blooms — is “no substitute” for cutting carbon dioxide emissions. But with the failure of the U.S. and the international community to take meaningful measures to reduce CO2 emissions, the panel recommends that the U.S. government should begin researching and testing alternatives in case the Earth’s climate system reaches a “tipping point” and immediate remedial action is required. “The federal government is the only entity that has the incentive, responsibility, and capacity to run a broad, systematic, and effective program,” the report says. “It can also play an important role in effectively establishing international research norms.”
Interview: Finding Common Ground
In the Contentious Climate Debate
Climate scientist Katharine Hayhoe, of Texas Tech University, is well known not only for her scientific work on the regional impacts of global warming in the
TTU
Katharine Hayhoe
U.S., but also for her efforts to reach out to conservative communities — particularly evangelical Christians — to speak with them about the realities of climate change. In an interview with
Yale Environment 360, Hayhoe discusses what rising temperatures will mean for the U.S., how to talk with climate skeptics, and what she would say to Texas Gov. Rick Perry to prod him into action on global warming. “Who doesn’t want renewable sources of energy?” said Hayhoe. “Who doesn’t want cleaner air and a thriving economy? Who doesn’t agree that we should be conservative with what we have? I think this is the way to move forward on this issue.”
Read the interviewThe Marshall Islands, a small archipelago nation in the Pacific Ocean, has established what will become
the world’s largest shark sanctuary, banning commercial shark fishing across 750,000 square miles of ocean — an area eight times as large as the UK — and outlawing the trade in shark products. In addition to a ban on shark fishing, the legislation bans the use of certain fishing gear in national waters. Government leaders say protection of sharks and rays is critical to the small nation’s tourism-driven economy. “There is no greater statement we can make about the importance of sharks to our culture, environment and economy,” said Senator Tony deBrum, a member of the Marshall Islands parliament and co-sponsor of the legislation. The Marshall Islands follow Palau, which established a nationwide shark sanctuary in 2009. Scientists say that more than a third of the world’s 1,044 shark species
are threatened with extinction, with millions of sharks slaughtered annually to feed a thriving global market for their fins, used in shark fin soup. The new protected zone expands the total area worldwide where sharks are protected from 2.7 million square kilometers to 4.6 million square kilometers.
Environmental groups say newly released e-mails between U.S. State Department officials and a lobbyist for the controversial Keystone XL pipeline
reveal a disturbing level of “complicity” and a bias by the regulators who will soon decide the fate of the project. The e-mails, the second batch to be obtained by the group Friends of the Earth through a Freedom of Information Act request, reveal at times an almost collaborative relationship between Marja D. Verloop, an energy and environment counselor for the State Department, and Paul Elliott, a lobbyist representing TransCanada, the company looking to build the 1,800-mile pipeline that would deliver crude oil from Alberta’s tar sands to the U.S. Gulf of Mexico coast. In one exchange, Verloop congratulates Elliott over a recent project endorsement by U.S. Sen. Max Baucus (D-Montana). “Go Paul!” she wrote. “Baucus support holds clout.” Damon Moglen, director of climate and energy projects for Friends of the Earth, said the e-mails suggest that the agency sees itself as “a facilitator of TransCanada’s plans.” The State Department, which will have final approval of the pipeline, said in August that the project would have “limited adverse environmental effects” if operated according to regulations.
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As temperatures rise and water supplies dry up, tribes in East Africa increasingly are coming into conflict. A
Yale Environment 360 video reports on a phenomenon that could become more common: how worsening drought will pit groups — and nations — against one another.
Watch the video.
The latest
from
Yale
Environment 360 is now available for mobile devices at
e360.yale.edu/mobile.
The Warriors of Qiugang, a
Yale Environment 360 video that chronicles the story of a Chinese village’s fight against a polluting chemical plant, was nominated for a 2011 Academy Award for Best Documentary (Short Subject).
Watch the trailer.
Top Image: aerial view of
Iceland. © Google & TerraMetrics.
Leveling Appalachia: The Legacy of Mountaintop Removal Mining, an e360 video examining the environmental and human impacts of this mining practice, won the award for best video in the 2010
National Magazine Awards for Digital Media.
Watch the video.