Earth Talk: Could We Harness Energy From Earthquakes?

Dear EarthTalk: Can earthquake energy be harnessed for power, particularly in places like Japan? Also, how can Japan, so vulnerable to earthquakes, even have nuclear power?

– Sasha M., Australia

While it is no doubt theoretically possible to generate electricity by harnessing the kinetic energy of shifting tectonic plates below the Earth’s crust, pulling it off from a practical standpoint would be a real logistical challenge – not to mention prohibitively expensive compared to harnessing other forms of energy, renewable or otherwise.

Big earthquakes throw off vast amounts of energy. According to Beth Buczynski of the CrispGreen Web site, researchers have calculated that the January 2010 magnitude 7.0 earthquake that killed upwards of 220,000 people in Haiti released as much energy as 31 of the atomic bombs the U.S. dropped on Hiroshima in 1945. And the magnitude 9.0 earthquake that struck northeast Japan in March 2011 unleashed the equivalent of more than 15,000 Hiroshima bombs. That’s a lot of energy indeed.

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EarthTalk: How Safe Is Soy?

Dear EarthTalk: How healthy is soy? I heard that, despite its healthy image, most soy is grown using chemicals like other crops and is even being genetically modified.

– D. Frinka, Syracuse, N.Y.

Food products made with soy have enjoyed great popularity in the U.S. and elsewhere in recent years. Two decades ago, Americans spent $300 million a year on soy food products; today we spend over $4 billion. More and more adults are substituting soy – a great source of protein – for meat, while a quarter of all baby formula contains soy instead of milk. Many school lunch programs nationwide have added soy-based veggie burgers to their menus, as have countless restaurants, including diners and fast food chains.

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