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Articles sur Japan

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There are so many different states – and provinces, districts, regions and lander! Getty Images

How many states and provinces are in the world?

The U.S. is broken up into 50 states, plus territories like Puerto Rico and Guam, and a federal district, Washington, D.C. Most other countries have smaller parts too.
An International Atomic Energy Agency investigator examines Reactor Unit 3 at the damaged Fukushima Daiichi plant, May 27, 2011. Greg Webb, IAEA/Flickr

10 years after Fukushima, safety is still nuclear power’s greatest challenge

On the 10th anniversary of the Fukushima nuclear disaster, two experts explain why human choices are more important to nuclear safety than technology, and why the job is far from finished.

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