volcano

Indonesian volcano spews hot gas and ash 22 times in two days

A volcano on Indonesia's Sumatra island has spewed hot ash and gas 22 times in the past two days, an official said on Monday.

Year-long Mars experiment on Hawaii due to end for six scientists

An international group of scientists will emerge on Sunday after a year of near isolation in a research station set up in Hawaii to simulate conditions on Mars.

Philippine volcano ejects ash in series of eruptions

 A volcano in the central Philippines began spewing thick clouds of ash Saturday, one week after another volcano in an eastern province erupted, a government agency said.

Alaska volcano sends ash cloud 11 km high

The eruption of Alaska's Pavlof volcano continued Monday, spouting fountains of lava and a plume of volcanic ash more than 11 kilometres into the atmosphere, the Alaskan Volcanic Observatory reported.