Archive for the ‘Energy’ Category

Tar sands - Thursday, October 29th, 2009

Canada’s oil-drenched sands give it the second-largest oil reserves in the world. Using the “tar sands” pollutes air and water, destroys forests and could cause cancer. Should we leave oil sands alone?

Green as a garbage dump? Waste rots, makes energy… - Thursday, November 6th, 2008

Decay is part of life, and death. When garbage decays in a landfill, or manure decays in a tank, the result is methane. Is this natural gas a problem — or an opportunity?

Ash-crete: Concrete Process to Turn Ash into Cash! - Thursday, June 8th, 2006

Coal ash is a giant garbage problem. Should we recycle more ash into concrete? A new process might save cement, rock, and landfill space.

Katrina’s Whirlwind: Could Marshes Slow the Floods? - Thursday, September 22nd, 2005

As New Orleans sinks and the seas rise, hurricanes are getting worse. Does it make sense to start restoring marshes and barrier islands that dampen the hurricanes? Could wetlands moderate the next Katrina?

Mercury Pollution: How to Respond - Thursday, May 6th, 2004

How should we deal with mercury air pollution in air, fish and water? Why do the studies of mercury consumption not agree? What to do when the studies conflict…

Immigration to U.S. - Thursday, April 22nd, 2004

As Congress, president debate changes to immigration laws, we wonder if immigration-fueled population growth is an environmental issue. Should United States reduce immigration?

Homestake Goldmine: Science Lab? - Thursday, July 10th, 2003

An international team of scientists selected the Homestake goldmine to be the world’s deepest underground lab, but the project may sink.

Renewable Energy: Biomass Invention - Friday, August 30th, 2002

Renewable energy and the hydrogen economy get a boost from new invention.

Photovoltaic Advance - Thursday, March 28th, 2002

New photovoltaic (PV) cells combine polymer and inorganic semiconductors — could be cheaper to manufacture.

Nuclear Power: Time for a Rebirth? - Friday, April 13th, 2001

Worldwide thirst for oil, Hurricane Katrina, political instability, conservation failures add up to record demand and record prices for fuel. Can inherently “safe designs” reduce the risk of meltdown? Should we support a revival of fission power?

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