What is the Pacific ‘Ring of Fire’?

Many of the world’s biggest earthquakes, volcanic eruptions and tsunamis occur along a chain of seismologically active regions that encircle the Pacific Ocean.

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The Citizen Scientists of Fukushima

Armed with measuring devices, groups of citizens are embracing science to monitor radioactive fallout — and regain control of lives upended by the 2011 meltdowns in Fukushima.

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