By Tim NewcombPosted 01.31.2012 at 11:19 am 19 Comments
In 2010, engineers in the U.S. dismantled 60 dams, helping to reclaim rivers for wildlife. Most of these dams were small, though; removing large ones poses a much bigger challenge. In September, the National Park Service started the largest-ever dam-removal project in the U.S., on the 210-foot (the tallest ever removed) and 108-foot dams on the Elwha River in Olympic National Park in Washington State.
Pollution and ravenous Asian carp may threaten the U.S. Great Lakes, but the Obama administration has now put forth a four-year, $475-million rescue plan that would clean up the huge lake ecosystem and institute a "zero tolerance policy" against future incursions by invasive species, AP reports.
More than 80,000 chemicals are used or produced in the U.S., and the Environmental Protection Agency (EPA) has placed restrictions or bans on just five. But the agency signaled its intent at the end of last year to possibly add restrictions to four chemicals that are widely used in making products such as toys, household items and medical equipment, according to Scientific American.
In a move to curb smog, the Environmental Protection Agency (EPA) has proposed the tightest regulations ever on ground-ozone-causing emissions. The new standards would replace 2008 ozone regulations implemented by the Bush administration that allowed so much smog emission that environmental advocates took the EPA to court, arguing that the weak emissions regulation didn't actually protect people's health.
Today's symbolic but politically crucial move by the Environmental Protection Agency (EPA) recognizes greenhouse gases as a danger for humans and Earth alike. That would open the doors for new regulations on carbon dioxide emissions from vehicles, power plants and factories, according to the New York Times.
Most parking lots may resemble a man-made wasteland even with cars sitting on top of them. But now they can serve a dual purpose by helping filter out pollutants in rainwater that might reach underground water sources.
In an attempt to head off new emissions standards, the U.S. Chamber of Commerce is threatening to sue the Environmental Protection Agency. The Chamber is calling it the Scopes Monkey Trial of the 21st Century, and wants to put the evidence supporting global warming on trial in a court of law.