Installing volcano monitoring equipment at Mt. Pinatubo. Usually we train local scientists to operate and maintain the equipment, which we invariably give to the host country. It's a nice feeling ...

Damage from volcanic ash at Clark Air Force Base in the Philippines after the June 15, 1991, eruption of Mount Pinatubo. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of ...

An animation of the Mount Pinatubo eruption of 1991 in the Philippines and its effect on the global climate. The eruption caused sulphur dioxide and ash particles to be ejected into the atmosphere.

An animation of the Mount Pinatubo eruption of 1991 in the Philippines and its effect on the global climate. The eruption caused sulphur dioxide and ash particles to be ejected into the atmosphere.

By contrast, major land eruptions - such as Pinatubo in the Philippines in 1991 - temporarily dim sunshine with an ashen sunshade before falling back to Earth. “The majority of volcanoes will ...