Alaska's Mt. Redoubt has been rumbling and grumbling for some time now, and erupted Sunday night, but on Thursday the volcano erupted twice, tossing a more than 12-mile-high cloud of ash into the sky.

Late Sunday yesterday Mt. Redoubt began eruption in Southern Alaska report the U.S. Geological Survey and Alaska Volcano Observatory.

The Mt. Redoubt volcano has been fitted with two webcams, in expectation of a possible eruption. The Alaskan volcano last blew its stack in December 1989. Lately, rumbling and tremors have warned of a possible "event."

The recent earthquake swarm at Yellowstone is not an indication of unusual volcanic activity. Earthquake swarms are normal geologic events at active volcanic systems. US Geological Survey vulcanologists who specialize in studying Yellowstone have determined that the volcano alert level there is normal.

Although the Soufriere Hills volcano on Montserrat exhibits cycles of eruption and quiet, an international team of researchers found that magma is continuously supplied from deep in the crust but that a valve acts below a shallower magma chamber, releasing lava to the surface periodically.

The world’s fastest-growing mud volcano is collapsing and could subside to depths of more than 140 metres with consequences for the surrounding environment, according to new research.

Chile’s Chaiten Volcano is shown spewing ash and smoke (centre left of image) into the air for hundreds of km over Argentina’s Patagonia Plateau in this Envisat image acquired on 5 May 2008.

The first evidence of a volcanic eruption from beneath Antarctica’s most rapidly changing ice sheet is reported this week in the journal Nature Geosciences. The volcano on the West Antarctic Ice Sheet erupted 2000 years ago (325BC) and remains active.

The 3,120-metre high Llaima, one of the most active among some 60 active volcanoes in Chile, has not had a major blast since 1994.

“On [07-07-07], the New Open World Foundation announced the completion of a world poll to name the ‘new Seven Wonders of the World’…To see them all would mean traveling to Jordan, Peru, India, Mexico, China, Brazil, and Italy. A tour of ‘finalists’ would span the United States, Mali, the United Kingdom, Greece, Spain, Australia, Egypt, Germany, Russia, Japan, Turkey, France, Chile and Cambodia …That would indeed be a wonderful journey.” – Philadelphia Inquirer

Volcanologist Sarah Fagents from the School of Ocean and Earth Science and Technology (SOEST) at the University of Hawaii at Manoa had an amazing opportunity to study volcanic hazards first hand, when a volcanic mudflow broke through the banks of a volcanic lake at Mount Ruapehu in New Zealand.