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 | 2012 JANUARY Jan. 23, 2012
 News Wrap: At Least 2 Killed, 100 Hurt by Possible Tornadoes in Alabama In other news Monday, at least two people were killed and 100 hurt when possible tornadoes struck Alabama. The huge system stretched from the Great Lakes to the Deep South, where the heaviest storms were hitting. Also, a U.S. Marine pleaded guilty to dereliction of duty in the killing of two dozen Iraqis in 2005.

   

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 | Jan. 18, 2012
 Could Keystone Pipeline Plan Be Revived After Obama's Rejection? President Obama denied TransCanada Corp.'s application to build the Keystone XL pipeline Wednesday, a project that would have carried oil 1,700 miles from the tar sands of Canada to refineries in Port Arthur, Texas. Hari Sreenivasan discusses the president's decision and the next steps with The Washington Post's Juliet Eilperin.

   

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 | 2011 DECEMBER Dec. 28, 2011
 How 2011 Became a 'Mind-Boggling' Year of Extreme Weather From snowstorms to floods and tornadoes, severe weather wreaked havoc across the United States this year, with 2011 marking far more extreme weather events than a typical year. Hari Sreenivasan discusses the science behind this year of extreme weather with NOAA's Kathryn Sullivan and Weather Underground's Jeff Masters.

   

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 | Dec. 28, 2011
 Testing Hybrids and Tossing Sandals in the Fight Against 'Wheat Rust' Scientists say they are making promising strides in their race against Ug99, a stem rust disease that, left unchecked, could wipe out 80 percent of the world's wheat crop. But this is a science of watching plants grow. The race is a marathon and the number of farmers forced to be in it will likely drop in the years ahead.

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 | Dec. 21, 2011
 New EPA Rules Target Power Plants' Toxic Mercury Emissions The Environmental Protection Agency unveiled new standards Wednesday to curb mercury emissions from coal- and oil-fueled power plants around the country. Gwen Ifill discusses the announcement with the Electric Reliability Coordinating Council's Scott Segal and the Natural Resources Defense Council's John Walke.

   

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 | Dec. 20, 2011
 News Wrap: Great Plains Snowstorm Kills at Least 6, Closes Major Highways In other news Tuesday, a snowstorm howled across the Great Plains for a second day, killing at least six people. High winds and heavy snow closed major highways in five states. Also, Egyptian troops and riot police raided Cairo's Tahrir Square in a new bid to evict people protesting military control.

   

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 | Dec. 8, 2011
 Seattleites Construct Rain Gardens to Curb Pollution From Stormwater Runoff In an effort to curb pollution from stormwater runoff, Seattle residents have begun a campaign to build 12,000 rain gardens around the Puget Sound. Katie Campbell of KCTS 9 reports.

   

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 | Dec. 5, 2011
 For Wind Energy's Future, Researchers Look High in the Sky The next major innovation in wind power might not involve big, white turbines dotting the countryside. KQED QUEST reports on research being done on "tethered airfoils" that could capture wind energy more efficiently that earthbound turbines. This report is part of the NewsHour's Connect series of quality public media reporting.

   

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 | NOVEMBER Nov. 28, 2011
 New Climate Change Deal to Succeed Kyoto a Long Shot What's behind the long struggle to reach a new international agreement on reducing greenhouse gases? Margaret Warner and The Washington Post's Juliet Eilperin preview the U.N.'s annual climate conference.

   

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 | Nov. 23, 2011
 Tiny Mussels Invade Great Lakes, Threaten Fishing Industry Tiny mussels are invading the Great Lakes, threatening the health of the waterways and the livelihoods of fishermen. Ash-har Quraishi of WTTW Chicago reports.

   

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 | Nov. 14, 2011
 NewsHour Connect: World's Largest Dam Removal Set to Restore Ecosystem The world's biggest dam removal project -- and the second-largest environmental restoration project in U.S. history -- is in progress on the Elwha River on the Olympic Peninsula in Washington state.

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 | Nov. 10, 2011
 Obama Administration Delays Keystone XL Pipeline Approval Should President Obama approve a major extension of the Keystone XL pipeline? Ray Suarez discusses that question, which has divided business, environmental groups and labor unions, with The Washington Post's Juliet Eilperin.

   

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 | OCTOBER Oct. 10, 2011
 Environment, Economy at Heart of Keystone XL Pipeline Debate A Canadian company wants to build a $13 billion, 1,700-mile pipeline to carry crude oil from the so-called tar sands region in Alberta through six states and a major aquifer to Texas for refining. Correspondent Tom Bearden reports from Nebraska on the high-stakes environmental and economic battle over the Keystone XL project.

   

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 | Oct. 10, 2011
 Keystone Oil Pipeline Project Divides Nebraska Residents Many Nebraskans have little interest in helping TransCanada, the company seeking to build the pipeline, which would stretch 1,700 miles from northern Alberta to Texas.

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 | SEPTEMBER Sept. 30, 2011
 Solar Decathlon Contest Refocuses on Affordability of New Homes WASHINGTON | In addition to more space for her family, Lakiya Culley's new home in Southeast Washington, D.C., comes with another big benefit: miniscule power bills. Culley will be living in the Empowerhouse, one of 20 houses built for the 2011 Solar Decathlon.

   

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 | Sept. 19, 2011
 Cowboys vs. Gray Wolves: Predator Once Again Prey For the first time in years, hunting season for the once-endangered gray wolf is underway in Idaho and Montana to reduce the predator's population. Cattle ranchers say the hunts are necessary to protect their herds, but environmentalists disagree. Science correspondent Miles O'Brien reports.

   

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 | Sept. 19, 2011
 The Return of the Gray Wolf Science correspondent Miles O'Brien reports on the successful return of a once endangered species now caught in the crosshairs of cattle ranchers.

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 | Sept. 14, 2011
 Deepwater Horizon Oil Report Fingers BP's Safety Lapses A government report out Wednesday finds that British oil giant BP bears the lion's share of blame for the 2010 explosion of the Deepwater Horizon oil rig in the Gulf of Mexico. The blast killed 11 workers and led to the worst offshore oil spill in U.S. history.

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 | Sept. 2, 2011
 Obama Drops Proposed Clean Air Rules President Obama has reversed course on proposed smog standards, a victory for business interests that had decried the smog restrictions on the grounds that they should be postponed -- until at least 2013 -- due to the recession.

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 | Sept. 1, 2011
 Arsonists or Terrorists? Film Details Rise, Fall of Earth Liberation Front Cell In "If a Tree Falls: A Story of the Earth Liberation Front," filmmaker Marshal Curry looks at radical environmentalists who were named a top domestic terrorist threat by the FBI. This excerpt is part of The Economist Film Project series of independently produced films aired in partnership between The Economist and the NewsHour.

   

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 | AUGUST Aug. 31, 2011
 Film Chronicles Rise and Fall of Eco-Terrorist Cell On Thursday's NewsHour, we will feature an excerpt of the film "If a Tree Falls: A Story of the Earth Liberation Front," which looks at the radical environmental group through the transformation of one of its members, Daniel McGowan.

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 | Aug. 29, 2011
 Tar Sands Pipeline Plan Renews Energy vs. Environment Debate A proposed pipeline would carry oil from Canadian tar sands fields to Texas refineries, but the project has sparked high-profile protests. Jeffrey Brown discusses the controversial Keystone XL pipeline proposal with the Manhattan Institute for Policy Research's Robert Bryce and environmentalist Bill McKibben.

   

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 | Aug. 29, 2011
 Proposed Tar Sands Oil Pipeline Elicits Protests At organized sit-ins in recent weeks, demonstrators gathered at the White House to voice their objections to the controversial pipeline, citing concerns over the environmental impacts of the $7 billion proposal. View a map of its path.

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 | Aug. 26, 2011
 Environment vs. Economy in 2012 In every election there are a few issues that shape the look and feel of the campaign, and even in the earliest stages of the 2012 race, one issue has emerged: economy vs. environment. Many GOP hopefuls have already made a point of talking about the voter concerns as a choice -- the economy and jobs or environmental regulation.

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 | Aug. 10, 2011
 Mobile Slaughterhouse Helps Wash. State Farmers Meet Demand for Local Food With the popularity of local food on the rise, Washington state farmer Cheryl Ouellette raises pigs to meet the demand. However, small farmers often can't process their own meat. A mobile slaughterhouse program brings a USDA-licensed facility to farms to benefit farmers, animals and "locavores." Sabrina Register of KCTS reports.

   

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 | Aug. 1, 2011
 New Widget Tracks Record-Breaking High Temperatures Using data collected by the NOAA's National Climatic Data Center, the PBS NewsHour has set out to track the number of high temperature records set each day of the year across the U.S.

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 | JULY July 29, 2011
 How Will New Fuel Efficiency Rules Affect Consumers? President Obama, flanked on stage by executives from the country's leading automakers, announced new fuel economy standards for cars and light trucks Friday that would double the current requirement to 54.

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 | July 28, 2011
 5 Years Later, Scientists Still Puzzled by Honeybee Decline Five years ago, honeybees began dying in large numbers and hives were becoming defunct. Spencer Michels reports on the scientists who are still trying to figure out why this is happening and what can be done to help the problem.

   

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 | July 28, 2011
 NewsHour Connect: Heat Wave Imperils Midwest Agriculture EmbedVideo;Temperatures have been rising in the Midwest this summer -- and with them, food prices may also be heading upward.

   

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 | July 28, 2011
 What's Behind the Problem of Disappearing Bees? Five years ago, bees in America and Canada were dying in large numbers and hives were becoming defunct. The problem was called Colony Collapse Disorder or CCD, and it threatened a handful of California's very profitable crops.

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 | July 25, 2011
 Mongolian Herders See Changes as Temperatures Rise Since 1960, Mongolia's average temperature has increased 4.1 degrees -- a change faster than the global average. The uptick has had an impact on herders living close to the land.

 

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 | July 25, 2011
 Changing the World: One Idea at a Time Meet the top winners in the "Technology 4 a Better World" campaign by Ashoka's Youth Venture, a global organization supporting youth social entrepreneurs, and electronic retailer, Best Buy.

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 | July 19, 2011
 NRC Chief: U.S. Nuclear Plants Safe Despite Age, Needed Upgrades The earthquake and tsunami that devastated the Japanese coast and triggered a nuclear crisis raised major questions surrounding the safety of U.S. nuclear reactors. Gwen Ifill discusses new safety regulations issued by the Nuclear Regulatory Commission with its head, Gregory Jaczko.

   

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 | July 19, 2011
 Nuclear Regulatory Commission Advises U.S. Nuclear Reactor Safety Upgrade The Nuclear Regulatory Commission presented a new set of industry safety recommendations for the U.S. on Tuesday. Gwen Ifill reports on the safety changes sparked by the earthquake and tsunami that devastated the Japanese coast and triggered a nuclear crisis.

   

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 | July 8, 2011
 Big Sky Country Struggles With Yellowstone Oil Spill Aftermath In Montana, contractors have been working 12 hours a day to soak up what they can of the estimated 42,000 gallons of crude oil that escaped into the Yellowstone River from a broken ExxonMobil pipeline. Correspondent Tom Bearden reports from Laurel, Mont., on the cleanup effort and health concerns for humans and wildlife.

   

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 | July 8, 2011
 Montanans Worry About Fallout from Yellowstone Spill Many people are worried that the state's reputation as a tourist attraction has been badly damaged by worldwide news coverage of an oil spill. Last Friday, a pipeline called the Silvertip released an estimated 42,000 gallons of crude oil into the storied Yellowstone River.

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 | July 7, 2011
 News Wrap: EPA Unveils New Power Plant Pollutants Rule In other news Thursday, the Environmental Protection Agency proposed a new rule that power plants must install technology to reduce two pollutants -- sulfur dioxide and nitrogen oxides. Also, a new report found that Medicaid coverage could mean better health and financial security for millions more poor and uninsured Americans.

   

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 | July 5, 2011
 Schweitzer Confident of Full Oil Spill Cleanup, Future Pipelines Will Be OK Three days after an ExxonMobil pipeline ruptured on the Yellowstone River, spewing 42,000 gallons of crude oil, crews are still scrambling to contain the spill but rising water levels blocked efforts to reach some of the soiled shoreline. Jeffrey Brown discusses the scope of the damage with Montana Gov. Brian Schweitzer.

   

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 | July 4, 2011
 News Wrap: Cleanup Effort Underway After Oil Spill Hits Yellowstone River In other news Monday, a major cleanup effort is underway in Montana after an oil spill spewed up to 42,000 gallons into the Yellowstone River. The ExxonMobil pipeline ruptured late Friday near the town of Laurel.

 

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 | July 4, 2011
 Oil Spill Cleanup in Yellowstone River, Shinawatra Named Thai Prime Minister Teams of federal and Exxon Mobile workers in Montana are trying to contain and assess the damage from tens of thousands of gallons of crude oil that gushed from a ruptured pipe beneath the banks of the Yellowstone River over the weekend.

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 | JUNE June 22, 2011
 Al Gore's Critique Sparks Debate Over Obama's Record on Global Warming In a "Rolling Stone" article, former Vice President Al Gore criticized President Obama's record on climate change. Gwen Ifill discusses what Mr. Obama has and hasn't done with The Center for International Policy's Glenn Hurowitz, The Center for American Progress' Daniel Weiss and The American Enterprise Institute's Ken Green.

   

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 | June 22, 2011
 Oceans Face Mass Extinctions, New Report Warns When 27 marine experts from a half-dozen countries met in England this April for a workshop on the state of the oceans, they knew the news would not be good.

   

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 | June 15, 2011
 Tracking Energy Booms, Busts and the Rise of the 'Fracking' Debate NewsHour correspondent Tom Bearden reports Wednesday on a community in Colorado that was once the site of large-scale oil drilling operations. Now, it is filled with gas-producing wells in another kind of energy boom.

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 | June 9, 2011
 Go Fish? Not in Pacific Ocean Sanctuaries off California's Coast Correspondent Spencer Michels reports on the controversy over dozens of no-fishing zones off the California coast.

   

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 | June 9, 2011
 'Up in Smoke' Film Examines Perils of Slash and Burn Agriculture In "Up in Smoke," filmmaker Adam Wakeling follows ecologist Michael Hands as he introduces Honduran farmers to the inga tree, his solution to problems caused by slash and burn agricultural practices. The documentary is part of a series of independently produced films aired in a partnership between The Economist and the NewsHour.

   

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 | June 9, 2011
 'Up in Smoke' Chronicles Slash and Burn Agriculture in Honduras We're looking at the film "Up in Smoke," a documentary on the use of slash and burn agriculture in Central America, this week as part of our partnership with The Economist magazine that showcases the art of filmmaking.

 

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 | June 7, 2011
 Fukushima Nuclear Disaster: 'a Failure of Regulation, not Operation' Three months after a massive earthquake and tsunami ravaged the Fukushima Daiichi nuclear power Plant in Japan, a new report puts the amount of radiation released at more than double earlier estimates. Judy Woodruff discusses the report's findings with James Acton of The Carnegie Endowment for International Peace.

   

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 | June 7, 2011
 Report: Puts Fukushima's Radiation Release at 1/6th of Chernobyl's It's been three months since a massive earthquake and tsunami ravaged the Fukushima Daiichi nuclear power plant in Japan. A new official report says the amount of radiation released was more than double the earlier estimates. Judy Woodruff reports on the findings.

 

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 | June 3, 2011
 Slide Show: Capturing Indonesia's Many Sides NewsHour deputy foreign affairs and defense editor Dan Sagalyn traveled to Indonesia in May 2011 to learn more about the Southeast Asian country -- the world's fourth most populous nation -- and the issues it faces today.

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 | June 3, 2011
 Could Studying Seawater Saltiness Be Key to Decoding Climate Puzzle? A satellite slated to launch into space next week will study the saltiness of the oceans, and, scientists hope, provide a better grasp of extreme weather events.

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