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Oil vs. Natural Gas for Home Heating: Which Costs More?

Dear EarthTalk : Is it true that gas furnaces cost less to run and burn cleaner than their oil counterparts? If I make the switch, how long should I expect it to take for me to pay back my initial investment? And are there any greener options I should consider?

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The Top 5 Astounding Animal Videos of 2011

My picks for the most astounding animal videos of 2011 take us on a journey around the globe. They depict diverse animals in natural habitats living their everyday lives – and they are simply stunning.

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What Really Happened in Malta This September When Contagious Bird Flu Was First Announced?

A view from the ESWI meeting in Malta, where Ron Fouchier first described the contagious H5N1 strain. Katherine Harmon A controversy over whether the U.S. government should allow details of a deadly new flu strain to be published in scientific journals has recently caught fire in the media

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Our Galaxy’s "Big Ears": Milky Way’s Large Companion Galaxies Stand Out

Our Milky Way is just one of many billions of galaxies that dot the cosmos--an ordinary spiral in a universe filled with them. The unspecialness of our corner of space, an idea known as the Copernican principle, is a cornerstone of modern cosmology.

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Passwords Go Bye Bye By 2017?

At the dawn of 2012, computer security looks a lot like it did five years ago--everything protected by a user ID and password. But that’s all set to change in the next five years

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Common Brain Mechanisms Underlie Supernatural Perceptions (preview)

You may have never personally caught sight of Jesus Christ’s face in a potato chip, but you have likely succumbed to an equally improbable belief at some point in your life. Many people claim that ghosts exist or that their dreams can predict the future.

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How to Make the Food System More Energy Efficient (preview)

For more than 50 years fossil fuels and fertilizers have been the key ingredients in much greater global food production and distribution. The food-energy relationship has been a good one, but it is now entering a new era. Food production is rising sharply, requiring more carbon-based fuels and nitrogen-based fertilizers, both of which exacerbate global warming, river and ocean pollution, and a host of other ills

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