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New Way to Kill Viruses: Shake Them to DeathCertain sound frequencies may shatter viruses.
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Whatever Happened to Wind Energy?Harnessing the potential of wind energy requires a lot of wind turbines.
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Whatever Happened to Energy Conservation?Simple changes can make the biggest environmental impact.
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Whatever Happened to Solar Power?Sunlight is abundant, but supplies little of our energy.
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Whatever Happened to Geothermal Energy?Mining Earth's heat has potential and pitfalls.
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Whatever Happened to Biodiesel?Some fuels from vegetable oil are environmentally better than others.
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Small World: Quantum Identity Crisis ObservedPhysicists check whether electrons are particles or waves.
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Whatever Happened to Nuclear Power?Traditional nuclear power has had a resurgence lately.
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Chemists Concoct Part of Life's RecipeCalculations show how DNA could form on primordial Earth or outer space.
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Whatever Happened to Earthships?Sustainable off-the-grid houses still needs to find a way to catch on.
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Whatever Happened to Fuel Cells?Hydrogen fuel cells can provide clean fuel. But where are the pumps?
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Solar Power Technology Claims MisleadingOverhyping of results could hurt the solar energy industry.
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Whatever Happened to Wave Energy?Renewable energy from waves waits to make a splash.
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To Catch the Wind, Bigger is BetterWind energy may be a great idea, but not on your roof.
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Hybrid Vehicles Are Only 'Green' When LeanA hybrid SUV isn't as environmentally friendly as conventional cars.
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Greatest Mysteries: What Makes a Scientist?It's a mystery why some people are drawn to scientific mysteries.
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Flying Saucer Designed for Greener Air TravelImaginations stretch to cut carbon emissions in growing industry.
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Green Chemistry: New Recipes Really WorkGreen chemistry rewrites chemical equations to clean up hazardous materials.
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Why Desalination Doesn't Work (Yet)Despite drought and growing water needs, the cost is too high.
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Planet-Saving Remedy Proposed: Stop ShoppingRecycling is fashionable, but can marketers convince us to not buy so much in the first place?
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'Green' Bricks Made from Clouds of Coal SmokeBricks made from recycled coal ash could save money and energy.
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Corn Stalks Engineered to Self-Degrade into FuelGenetically engineered corn speeds up process of making ethanol.
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Snowball Fight Erupts over Frozen Earth TheoryHeated debate: Was Earth ever a big snowball? New evidence suggests no.
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The Enduring Mystery of Light
