Polar bear on ice in the southern Beaufort Sea, April 8, 2011
Polar bear on ice in the southern Beaufort Sea, April 8, 2011A polar bear walks across rubble ice in the Alaska portion of the southern Beaufort Sea, April 8, 2011
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Polar bear on ice in the southern Beaufort Sea, April 8, 2011
Polar bear on ice in the southern Beaufort Sea, April 8, 2011
Polar bear on ice in the southern Beaufort Sea, April 8, 2011A polar bear walks across rubble ice in the Alaska portion of the southern Beaufort Sea, April 8, 2011
George Durner and Jennifer Wiley working on an anesthetized polar bear
George Durner and Jennifer Wiley working on an anesthetized polar bearGeorge Durner and Jennifer Wiley working on an anesthetized polar bear
George Durner and Jennifer Wiley working on an anesthetized polar bear
George Durner and Jennifer Wiley working on an anesthetized polar bearGeorge Durner and Jennifer Wiley working on an anesthetized polar bear
Caribou from the Central Arctic Herd in the winter in Northern Alaska
Caribou from the Central Arctic Herd in the winter in Northern AlaskaCaribou from the Central Arctic herd along the Sagavanirktok River in northern Alaska.
Sagavanirktok River, AK.
Caribou from the Central Arctic Herd in the winter in Northern Alaska
Caribou from the Central Arctic Herd in the winter in Northern AlaskaCaribou from the Central Arctic herd along the Sagavanirktok River in northern Alaska.
Sagavanirktok River, AK.
Caribou in the Winter in Northern Alaska
Caribou from the Central Arctic herd along the Sagavanirktok River in northern Alaska.
Sagavanirktok River, AK.
Caribou from the Central Arctic herd along the Sagavanirktok River in northern Alaska.
Sagavanirktok River, AK.
Caribou in the Winter in Northern Alaska
Caribou from the Central Arctic herd along the Sagavanirktok River in northern Alaska.
Sagavanirktok River, AK.
Caribou from the Central Arctic herd along the Sagavanirktok River in northern Alaska.
Sagavanirktok River, AK.
Northern Pygmy-Owl at night in Juneau, Alaska
Northern Pygmy-Owl at night in Juneau, Alaska.
Northern Pygmy-Owl at night in Juneau, Alaska.
Aerial view of the Matanuska River Delta
Aerial view of the Matanuska River Delta.
Aerial view of the Matanuska River Delta.
Aerial of a Cook Inlet stream
Cook Inlet aerial stream
An aerial view of a Cook Inlet bridge
Aerial view of a bridge over the Cook Inlet.
Aerial view of a bridge over the Cook Inlet.
Chester Creek in Anchorage, Alaska
Chester Creek in Anchorage, Alaska.
Chester Creek in Anchorage, Alaska.
Short-eared Owl in the Juneau, Alaska
Short-eared Owl in the Juneau, Alaska.
Short-eared Owl in the Juneau, Alaska.
USGS Alaska Science Center and Alaska Volcano Observatory office
USGS Alaska Science Center and Alaska Volcano Observatory officeUSGS Alaska Science Center and Alaska Volcano Observatory Grace Hall office
USGS Alaska Science Center and Alaska Volcano Observatory office
USGS Alaska Science Center and Alaska Volcano Observatory officeUSGS Alaska Science Center and Alaska Volcano Observatory Grace Hall office
Montana River sonar on a bridge
Montana River sonar on a bridge
Montana River sonar on a bridge
Tanana River pier at Nenana
Tanana River pier at Nenana
Tanana River pier at Nenana
Tanana River bridge at Nenana
Tanana River bridge at Nenana
Tanana River bridge at Nenana
Sheridan River bridge
Sheridan River bridge
Northern Hawk Owl in a tree in Juneau, Alaska
Northern Hawk Owl in a tree in Juneau, Alaska.
Northern Hawk Owl in a tree in Juneau, Alaska.
Northern Hawk Owl on a building in Juneau, Alaska
Northern Hawk Owl on a building in Juneau, Alaska.
Northern Hawk Owl on a building in Juneau, Alaska.
Satellite image of resuspended volcanic ash cloud over Kodiak Island, Alaska
Satellite image of resuspended volcanic ash cloud over Kodiak Island, AlaskaMODIS Aqua 1 km true color satellite image showing resuspended volcanic ash cloud (arrow) generated from high winds scouring exposed ash on the Pacific side of the Katmai volcanic range. The cloud stretches across the Shelikof Straight and western Kodiak Island. Image ID 2010333 taken November 29, 2010. Courtesy NASA.
Satellite image of resuspended volcanic ash cloud over Kodiak Island, Alaska
Satellite image of resuspended volcanic ash cloud over Kodiak Island, AlaskaMODIS Aqua 1 km true color satellite image showing resuspended volcanic ash cloud (arrow) generated from high winds scouring exposed ash on the Pacific side of the Katmai volcanic range. The cloud stretches across the Shelikof Straight and western Kodiak Island. Image ID 2010333 taken November 29, 2010. Courtesy NASA.
Annotated Satellite Image of southern Alaska Showing Anchorage and Kodiak Island
Annotated Satellite Image of southern Alaska Showing Anchorage and Kodiak IslandThis MODIS Aqua 1-km-resolution, true-color satellite image shows a resuspended ash cloud generated from high winds scouring the dry, unvegetated deposits in the Valley of Ten Thousand Smokes. The cloud stretches across Shelikof Strait to western Kodiak Island.
Location: south-central Alaska, from Kodiak to Anchorage
Annotated Satellite Image of southern Alaska Showing Anchorage and Kodiak Island
Annotated Satellite Image of southern Alaska Showing Anchorage and Kodiak IslandThis MODIS Aqua 1-km-resolution, true-color satellite image shows a resuspended ash cloud generated from high winds scouring the dry, unvegetated deposits in the Valley of Ten Thousand Smokes. The cloud stretches across Shelikof Strait to western Kodiak Island.
Location: south-central Alaska, from Kodiak to Anchorage
View of Toklat River from a bridge
View of Toklat River from a bridge
View of Toklat River from a bridge