Science Source Feb 2010

Debris Avalanche, looking at Coldwater Lake. January 13, 1984.

Mount St. Helens and the devastated area is now within the 110,000 acre Mount St. Helens National Volcanic Monument, under jurisdiction of the United...

Mount St. Helens erupted often between 1980 and 1986. An explosive eruption on March 19, 1982, sent pumice and ash 9 miles (14 kilometers) into the ai...

Colorful ponds on the debris avalanche. August 8, 1981.

Mount St. Helens' summit after several small explosive eruptions. The smaller of the two pit craters was formed first on March 27, 1980. Subsequent er...

Aerial view of a two-tone Mount St. Helens with Mount Rainier in distance. View looking north-northeast. Ash covered snow is a result of wind directio...

Nearly 135 miles (220 kilometers) of river channels surrounding the volcano were affected by the lahars of May 18, 1980. A mudline left behind on tree...

Mailboxes emerging from mudflow after the May 18, 1980 Mount St. Helens eruption.

The smallest of five major volcanic peaks in Washington State was Mount St. Helens, with an elevation of 9,677 feet (2,950 meters) before the eruption...

May 18, 1980 eruption of Mount St. Helens, Mount Adams is in the background (right).

'Bayonet trees', stripped of bark and vegetation, show direction the May 18, 1980, lahar traveled. October 23, 1980.

Spirit Lake, once surrounded by lush forest, is within the area devastated by the blast of Mount St. Helens on May 18, 1980. Remnants of the forest fl...

Remains of the bridge crossing the Muddy River after the May 18, 1980 eruption of Mount St. Helens. September 23, 1980.

For weeks volcanic ash covered the landscape around the volcano and for several hundred miles downwind to the east. Noticeable ash fell in eleven stat...

July 22, 1980 eruption of Mount St. Helens, with Mount Rainier, Washington, in the background. July 22, 1980.

Car buried by Mount St. Helens eruption of May 18, 1980.

Day after the May 18, 1980 eruption of Mount St. Helens.

Mount St. Helens debris avalanche and eruption.

Mount St. Helens debris avalanche.

View west, of the top of Mount St. Helens showing graben and new crater. April 7, 1980.

Mount St. Helens' eruption, first crater. Aerial view on the afternoon of March 27 looking east, showing a newly formed crater, swath of dark new ash...

Ash eruption at Halemaumau, the summit crater of Kilauea Volcano on March 26, 2008, the first since 1924. Kilauea is one of the world's most active vo...

Ash eruption at Halemaumau, the summit crater of Kilauea Volcano on March 26, 2008, the first since 1924. Kilauea is one of the world's most active vo...

Halemaumau, Kilauea Volcano's summit crater, glows in the night from incandescent gases illuminating the base of the volcano's erupting steam plume. M...

Steam and Ash eruption at Halemaumau, the summit crater of Kilauea Volcano on March 29, 2008. This mostly steam activity followed several days of inte...

Flood erosion along the side of the street in Rochester, NH.

The Hawaiian Volcano Observatory is located at the summit of Kilauea Volcano on the Big Island of Hawaii. It overlooks Halemaumau, the volcano's summi...

Kilauea is the youngest volcano on the Big Island of Hawaii and the most active volcano on Earth. The newest eruption of Kilauea began in January 1983...

Kilauea is the youngest volcano on the Big Island of Hawaii and the most active volcano on Earth. The newest eruption of Kilauea began in January 1983...

Kilauea is the youngest volcano on the Big Island of Hawaii and the most active volcano on Earth. The newest eruption of Kilauea began in January 1983...

A frozen loader at Amundsen-Scott South Pole Station waits for warmer weather and the first plane of materials. Amundsen-Scott is one of three U.S. re...

Urban flooding in Eagle, Idaho.

Half moon during day.

Dorcus Bay Beach with moon and reflection, Bruce Peninsula, Ontario, Canada.

Hurricane damage.

Blue Funnel Spring.

Poas Volcano.

The Sun rises beneath stratocumulus clouds above the North Platte River Valley, Nebraska.

Prince Edward Island, Canada.

Sunrise over Goose Cove, Labrador.

The Sun rises over the Arkansas River in Kansas.

Sunset.

The moon falls below the Teton Range, Wyoming.

The sunrise is reflected in a pond near Mount Healy, Alaska.

Sunset at Kiawah Island, South Carolina.

The Sun sets over the Cottonwood Mountains of Death Valley, California.

The Sun sets over an icy strait in Alaska.

The aftermath of Typhoon Nina, in the Philippines.

The aftermath of Typhoon Nina, in the Philippines.

The aftermath of Typhoon Nina, in the Philippines.