Japanese volcano erupts for the first time in 250 years
After lying dormant since 1768, Japan's Mount Io has erupted for the first time, spewing smoke and ash 400 metres high into the air. Officials warned that large flying rocks could fall over a three-kilometre radius. Japan has 110 active volcanoes as it lies within the 'Pacific Ring of Fire', where 80% of the world's earthquakes and eruptions take place.