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Concerned scientists say climate warming killing forests in the Rockies
Posted by PBS: None Given on October 3rd, 2014
PBS: Rocky Mountain forests as we know them are in great peril, according to a new report from the Union of Concerned Scientists and the Rocky Mountain Climate Organization, with many having already been substantially damaged by the triple threat of beetle kill, wildfire and heat-related drought.
The report presents new evidence that human-caused climate warming is driving those components of forest destruction.
The National Climate Assessment published earlier this year included similar material,...
Posted in Water Conservation 
Comments Off on Concerned scientists say climate warming killing forests in the RockiesBehind the mysterious holes in Siberia
Posted by PBS: None Given on August 21st, 2014
PBS: JUDY WOODRUFF: Finally tonight, new indications that the planet is warming, especially in the frozen north. Scientists have been tracking Arctic thawing for decades, and they have seen a dramatic increase since 2000.
When holes opened up in the earth recently in Siberia, a wave of speculation was set off as to their cause. Scientists now think warming is the culprit.
To help us understand all this, we welcome back Tom Wagner. He directs studies of the polar regions for NASA.
And it`s good...
EPA weighs environmental consequences of ethanol with proposed cuts
Posted by PBS: None Given on November 17th, 2013
PBS: SUMMARY The EPA announced that better fuel efficiency has led to proposed cuts in the amount of ethanol required to be blended into gasoline next year. These changes come amid revelations over the environmental impact of increased U.S. corn production. Hari Sreenivasan examines the story with Dina Cappiello of the Associated Press.
Transcript
JUDY WOODRUFF: Next: the changing requirements for ethanol in gasoline and bigger questions over its wider use in recent years.
Today, the Obama administration...
Posted in Water Conservation Comments Off on EPA weighs environmental consequences of ethanol with proposed cutsCan environmentalists and frackers be friends?
Posted by PBS: None Given on November 4th, 2013
PBS: SUMMARY In an unlikely alliance, natural gas companies and environmentalists have decided to work together to make fracking safer. Rick Karr travels to Pennsylvania to explore the tensions this has created among environmental groups.
ANNOUNCER:Environmentalists and oil and gas companies are used to finding themselves on opposite sides of debates about fossil fuel consumption, pollution, and global climate change. But in Pennsylvania, some environmental advocacy groups have formed an unlikely...
Tar sands pipeline plan renews energy vs. environment debate
Posted by PBS: None Given on August 30th, 2011
PBS: Transcript
JEFFREY BROWN: Next: a friendly and safe new source of oil for the U.S. or an environmental disaster waiting to happen?
The tar sands of Alberta, in western Canada, are today considered one of the largest oil reserves in the world, a source of crude petroleum known as bitumen. But the extraction of oil there has come with concerns about the environmental impact. And now those concerns have exploded with a plan by the Calgary-based company TransCanada to build a massive pipeline to...
Posted in Water Conservation Comments Off on Tar sands pipeline plan renews energy vs. environment debate