This photograph shows ice-wedge polygons and an eroding shoreline at Cape Halkett on the Beaufort Sea coast of Alaska. Coastal erosion along the Arctic coast is chronic, widespread, and potentially accelerating, posing threats to infrastructure important for defense and energy purposes, natural shoreline habitats, and nearby Native communities.
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Cape Halkett, Beaufort Sea, Alaska
This photograph shows ice-wedge polygons and an eroding shoreline at Cape Halkett on the Beaufort Sea coast of Alaska. Coastal erosion along the Arctic coast is chronic, widespread, and potentially accelerating, posing threats to infrastructure important for defense and energy purposes, natural shoreline habitats, and nearby Native communities.
Pacific Chorus Frog
A Pacific chorus frog (Pseudacris regilla) in a meadow located in Lassen Volcanic National Park.
A Pacific chorus frog (Pseudacris regilla) in a meadow located in Lassen Volcanic National Park.
Big Sagebrush Re-establishing 15 Years Post-wildfire Along the Boise Front Mountains
Young mountain big sagebrush shown in the foreground are re-establishing in a native bunchgrass community 15 years after a fire along the Boise Front Mountains looking unto the Snake River Plain, Idaho.
Young mountain big sagebrush shown in the foreground are re-establishing in a native bunchgrass community 15 years after a fire along the Boise Front Mountains looking unto the Snake River Plain, Idaho.
Collecting toxicity-test water on the St. Lawrence River
Collecting toxicity-test water on the St. Lawrence River
Collecting toxicity-test water on the St. Lawrence River
Great Blue Heron (Ardea herodias)
Great Blue Heron standing in the water.
Great Blue Heron standing in the water.
Water Sampling in Lake Ontario, New York
Collecting water sample on Lake Ontario
Collecting water sample on Lake Ontario
Coral atoll Tureia
Coral atolls are normally long, thin bars of white sand that rise just a few meters above sea level. The island or island group surrounds a hollow center where a volcanic peak once was. The atoll shown in this photo-like satellite image is the island of Tureia, in French Polynesia, in the South Pacific Ocean.
Coral atolls are normally long, thin bars of white sand that rise just a few meters above sea level. The island or island group surrounds a hollow center where a volcanic peak once was. The atoll shown in this photo-like satellite image is the island of Tureia, in French Polynesia, in the South Pacific Ocean.
Sandpipers
Sandpipers.
Location: Salton Sea, California.
Sandpipers.
Location: Salton Sea, California.
Studies at Voyageurs National Park Revealed Trends in Mercury
Voyageurs National Park (VNP), a pristine setting with abundant lakes, wetlands, and streams situated on granitic bedrock, is located near northern Minnesota's border with Canada. Long-term studies at VNP have revealed trends in mercury concentration in precipitation, surface water, and fish.
Voyageurs National Park (VNP), a pristine setting with abundant lakes, wetlands, and streams situated on granitic bedrock, is located near northern Minnesota's border with Canada. Long-term studies at VNP have revealed trends in mercury concentration in precipitation, surface water, and fish.
Western Sandpiper
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Wilson's Phalarope
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Wood Stork
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Wood Storks
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Dinosaur Tracks
Dinosaur tracks in the Jurassic Moenave Formation. It is a popular site for tourists to stop and meet local Navajo and Moenkopi Hopi guides who lead short tours through the tracks area.
Dinosaur tracks in the Jurassic Moenave Formation. It is a popular site for tourists to stop and meet local Navajo and Moenkopi Hopi guides who lead short tours through the tracks area.
Panoramic photograph from Mount St. Helens' crater rim looking nort...
View the annotated version of this photograph.
View the annotated version of this photograph.
Panoramic photograph from the southern rim of Mount St. Helens' cra...
Panoramic photograph from the southern rim of Mount St. Helens' crater rim looking north with accompanying annotation.
Panoramic photograph from the southern rim of Mount St. Helens' crater rim looking north with accompanying annotation.
PubTalk 7/2006 — Uncovering Silicon Valley
Weaving a tale of three sedimentary basins
by Victoria E. Langenheim, Geophysicist
Weaving a tale of three sedimentary basins
by Victoria E. Langenheim, Geophysicist
Mount St. Helens Panorama
View northward from Mount St. Helens' crater rim, July 2006.
View northward from Mount St. Helens' crater rim, July 2006.
Pine Marten in Glacier National Park
A pine marten climbs up and down a tree and onto the remote camera box. The camera is pointed at a bear rub tree.
A pine marten climbs up and down a tree and onto the remote camera box. The camera is pointed at a bear rub tree.
Sagebrush Landscape
Brewer's sparrow (Spizella breweri) and sagebush sparrow (Artemisiospiza nevadensis) breeding habitat in central Nevada.
Brewer's sparrow (Spizella breweri) and sagebush sparrow (Artemisiospiza nevadensis) breeding habitat in central Nevada.
Researcher measures the wing of a palila nestling
A very young palila nestling is given unique color bands and it's body measurements are taken on Mauna Kea volcano, Hawai‘i Island, Hawai‘i. In a multi-decadal study of palila and the factors influencing their population, Dr.
A very young palila nestling is given unique color bands and it's body measurements are taken on Mauna Kea volcano, Hawai‘i Island, Hawai‘i. In a multi-decadal study of palila and the factors influencing their population, Dr.