Environment

  Is the EPA regulating too much?

Matt Kibbe of FreedomWorks argues that the EPA rushes to regulation, imposing high costs on the economy with few gains for environmental quality.

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  Toxic law? Chemical pollution and the EPA

Need to Know takes a look at a small town plagued by chemical pollution and disease, and the regulatory system some say has failed its residents.

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  Hurricanes, tornadoes, droughts, floods: A preview of life under global warming?

As Hurricane Irene, first major hurricane of the season, threatens the Eastern seaboard, Need to Know investigates the links between extreme weather and climate change.

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  Removing horses from the wild

Filmmaker and wildlife activist Ginger Kathrens discusses the Bureau of Land Management’s controversial removal of horses from the wild in the western U.S.

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  A solution for nuclear waste?

As the U.S. continues to try to resolve the decades old issue of what to do with nuclear waste, Need to Know visits a possible solution a half mile below the desert in New Mexico. Alison Stewart goes underground for a tour.

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  Standing room only

As the world steadily marches toward record-breaking population figures, Need to Know time travels to the late ’60s/early ’70s, when “overpopulation” was a frightening issue that occupied a substantial slice of the American psyche.

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  Double fault: Nuclear safety at Diablo Canyon

The Diablo Canyon nuclear plant is situated near two fault lines, and at least one critic is questioning whether the utility that owns the plant is doing all it needs to to ensure that it can safely withstand the kind of earthquake some seismologists believe is possible.

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Inkjet printing solar panels: cheap and almost green

Solar energy is one of the easiest and greenest of the renewable energy sources, but its high price is holding it back. One of the most promising new research developments involves printing thinner, cheaper panels with an inkjet.

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  Before and after the Minot flood, and a plan to rebuild

After flooding in the past two weeks, the city of Minot, North Dakota, is still largely underwater, but an ambitious plan is unfolding to protect it the next time. See interactive satellite images.

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  The sea also rises: What climate change means for coastal communities

The city of Norfolk, Virginia, is already experiencing the effects of sea-level rise. We explore how one American city is dealing with a problem that may soon be on all our doorsteps.