Japan is stepping up its volcano research that trails far behind its advanced studies on earthquakes despite being home to 111 active volcanoes, about 10 percent of the global total.

Still, building nuclear plants in Japan, a nation prone to such natural disasters as earthquakes, tsunami and volcanic eruptions, entails much higher risks than in other countries. Nuclear power ...

For the best experience, please enable JavaScript in your browser settings. Sakurajima volcano is seen from a shelter at a town in Kagoshima, Kyushu, Japan. [AP ...