Images

A classic marine tide pool environment among some of the black lava rocks found on the southern shore of Maui in the Hawaiian islands.

View looking up-stream toward Carraizo Dam in Loiza, Puerto Rico, under drought conditions.

Harry's Ridge monitoring station, 8 km (5 mi) north of Mount St. Helens' crater.

Mount Hood dominates the skyline outside of Portland, Oregon on a clear day. An major eruption of Mount Hood would pose a great hazard to the regional economy.

Mount Hood in the not-so-far distance beyond Downtown Portland, Oregon. Photograph taken at the top of the Portland Aerial Tram line on Marquam Hill.

Coast Salish Canoe Journey 2009 landing in Pillar Point.
The journey pulled a water quality probe to measure salinity, temperature, pH, and dissolved oxygen.

Plains bison in winter at Yellowstone National Park.

Shallow coral reefs in the U.S. Virgin Islands are in jeopardy due to climate warming and ocean acidification.

Two Cladonia lichen species, C. stellaris and C. rangiferina are pictured here among some blueberry plants in Newfoundland.  Lichens -- which are often mistaken for moss -- are unusual plant-like organisms that are actually symbioses of fungi, algae and bacteria living together.

Prairie Pothole Region landscape showing high wetland density.

Crumbling blocks of permafrost along the Beaufort Coast

Turner Falls, the largest waterfall in Oklahoma, near Davis, Oklahoma. Springs discharging from the Arbuckle-Simpson aquifer into Honey Creek are the source of water to Turner Falls.

Picture of Geyser Valley in Olympic National Park in Northwest Washington.

Snowshoe hare experiencing camouflage mismatch in the spring at the Seeley Lake, MT, study site.

Picture of Moraine Lake taken from the south face of South Sister in the Three Sisters Wilderness Area.

Great Smoky Mountains National Park

Picture of the Elwha River in Olympic National Park in Northwest Washington.

Muir Glacier has retreated more than 2 km and ceased to have a tidewater terminus. Note that the retreat of Muir Glacier has left several ice-cored morainal mounds between the shoreline and the terminus.

Middle fork of the Salmon River near Shoup, Idaho.