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Well head of Sourdough oil discovery
Well head of Sourdough oil discovery on Alaska state lease
Well head of Sourdough oil discovery on Alaska state lease
Well head of Sourdough oil discovery on Alaska state lease

Well head of Sourdough oil discovery on Alaska state lease less than one mile west of Arctic National Wildlife Refuge-1002 Area showing minimal disturbance of permafrost polygons.   

Well head of Sourdough oil discovery on Alaska state lease less than one mile west of Arctic National Wildlife Refuge-1002 Area showing minimal disturbance of permafrost polygons.   

near the Sadlerochit River
Arctic National Wildlife Refuge-1002 Area near the Sadlerochit River
Arctic National Wildlife Refuge-1002 Area near the Sadlerochit River
Arctic National Wildlife Refuge-1002 Area near the Sadlerochit River

Northward view in central Arctic National Wildlife Refuge-1002 Area near the Sadlerochit River showing gently rolling topography typical of the southern coastal plain and meandering creek.

Photo of stream in urban environment with green lawn beside it. Photo credit: Alan Cressler USGS
Pesticides in Streams Photo copy.jpg
Pesticides in Streams Photo copy.jpg
ANWR-1002 Area with ice in Camden Bay
western ANWR-1002 Area with ice in Camden Bay
western ANWR-1002 Area with ice in Camden Bay
western ANWR-1002 Area with ice in Camden Bay

Northward view in western Arctic National Wildlife Refuge-1002 Area with ice in Camden Bay in distance. North sloping, tundra-covered surface is typical of coastal plain.

Northward view in western Arctic National Wildlife Refuge-1002 Area with ice in Camden Bay in distance. North sloping, tundra-covered surface is typical of coastal plain.

western Sadlerochit Mountains
western Sadlerochit Mountains near the Tamayariak River
western Sadlerochit Mountains near the Tamayariak River
western Sadlerochit Mountains near the Tamayariak River

View to northeast from western Sadlerochit Mountains near the Tamayariak River. This gently rolling topography is typical of the southern coastal plain.

View to northeast from western Sadlerochit Mountains near the Tamayariak River. This gently rolling topography is typical of the southern coastal plain.

near the Jago River
ANWR-1002 Area near the Jago River
ANWR-1002 Area near the Jago River
ANWR-1002 Area near the Jago River

View to the northeast from east-central Arctic National Wildlife Refuge-1002 Area near the Jago River.

View to the northeast from east-central Arctic National Wildlife Refuge-1002 Area near the Jago River.

near the Jago River
ANWR-1002 Area near the Jago River
ANWR-1002 Area near the Jago River
ANWR-1002 Area near the Jago River

Eastward view from east-central Arctic National Wildlife Refuge-1002 Area near the Jago River. Northeastern Brooks Range visible in distance at right.

Eastward view from east-central Arctic National Wildlife Refuge-1002 Area near the Jago River. Northeastern Brooks Range visible in distance at right.

oil-saturated Oligocene sandstone
oil-saturated Oligocene sandstone in the Sagavanirktok Formation
oil-saturated Oligocene sandstone in the Sagavanirktok Formation
oil-saturated Oligocene sandstone in the Sagavanirktok Formation

Geologists examine oil-saturated Oligocene sandstone in the Sagavanirktok Formation exposed on Marsh Creek anticline near Katakturuk River in western Arctic National Wildlife Refuge-1002 Area. Weathered surfaces are light gray and freshly broken surfaces are brown.

Geologists examine oil-saturated Oligocene sandstone in the Sagavanirktok Formation exposed on Marsh Creek anticline near Katakturuk River in western Arctic National Wildlife Refuge-1002 Area. Weathered surfaces are light gray and freshly broken surfaces are brown.

Closeup view of oil-saturated Oligocene sandstone
Closeup view of oil-saturated Oligocene sandstone in the Sagavanirktok
Closeup view of oil-saturated Oligocene sandstone in the Sagavanirktok
Closeup view of oil-saturated Oligocene sandstone in the Sagavanirktok

Closeup view of oil-saturated Oligocene sandstone in the Sagavanirktok Formation exposed on Marsh Creek anticline near Katakturuk River in western Arctic National Wildlife Refuge-1002 Area. Weathered surface is light gray and freshly broken surface is brown.

Closeup view of oil-saturated Oligocene sandstone in the Sagavanirktok Formation exposed on Marsh Creek anticline near Katakturuk River in western Arctic National Wildlife Refuge-1002 Area. Weathered surface is light gray and freshly broken surface is brown.

Oil-saturated Miocene or younger sandstone
Oil-saturated Miocene or younger sandstone in the Sagavanirktok Fm.
Oil-saturated Miocene or younger sandstone in the Sagavanirktok Fm.
Oil-saturated Miocene or younger sandstone in the Sagavanirktok Fm.

Oil-saturated Miocene or younger sandstone in the Sagavanirktok Formation exposed at Angun Point on the coast of the Arctic Ocean, northeastern Arctic National Wildlife Refuge-1002 Area.

Oil-saturated Miocene or younger sandstone in the Sagavanirktok Formation exposed at Angun Point on the coast of the Arctic Ocean, northeastern Arctic National Wildlife Refuge-1002 Area.

Scientist holds a paedomorph barred tiger salamander in two hands, showing its external gills, tail, and large size.
Barred tiger salamander (paedomorph)
Barred tiger salamander (paedomorph)
Barred tiger salamander (paedomorph)

Barred Tiger Salamander Paedomorph, Cottonwood Lake Study Area, North Dakota. Some barred tiger salamanders never metamorphose and keep their larval features (e.g., gills, finlike tail) their whole lives as reproductively mature adults known as paedomorphs, which can grow to be 14 inches in length.

Barred Tiger Salamander Paedomorph, Cottonwood Lake Study Area, North Dakota. Some barred tiger salamanders never metamorphose and keep their larval features (e.g., gills, finlike tail) their whole lives as reproductively mature adults known as paedomorphs, which can grow to be 14 inches in length.

Arizona Landsat State Mosaic
Arizona Landsat State Mosaic
Arizona Landsat State Mosaic
Arizona Landsat State Mosaic

Arizona is blessed with many natural wonders including the Grand Canyon, Lake Powell/Rainbow Bridge, Petrified Forest/Painted Desert, Monument Valley, Meteor Crater, and Superstition Mountain.

Capital Phoenix

Image Source Landsat 8

Population 7,151,502

Arizona is blessed with many natural wonders including the Grand Canyon, Lake Powell/Rainbow Bridge, Petrified Forest/Painted Desert, Monument Valley, Meteor Crater, and Superstition Mountain.

Capital Phoenix

Image Source Landsat 8

Population 7,151,502

Animated GIF of a baby tortoise hatching out of its shell
Hatching Baby Tortoise (GIF)
Hatching Baby Tortoise (GIF)
Hatching Baby Tortoise (GIF)

Animated GIF of a baby tortoise hatching out of its shell. Pulled from "The Heat is On: Desert Tortoises and Survival" video by Stephen M. Wessells.

Animated GIF of a baby tortoise hatching out of its shell. Pulled from "The Heat is On: Desert Tortoises and Survival" video by Stephen M. Wessells.

Burning Gas Hydrate
Burning Gas Hydrate
Burning Gas Hydrate
Burning Gas Hydrate

Gas hydrate is sometimes called “the ice that burns” because the warming hydrates release enough methane to sustain a flame. Credit: USGS

Gas hydrate is sometimes called “the ice that burns” because the warming hydrates release enough methane to sustain a flame. Credit: USGS

Camden Bay
Camden Bay from west-central ANWR-1002 Area
Camden Bay from west-central ANWR-1002 Area
Camden Bay from west-central ANWR-1002 Area

View to the northeast towards Camden Bay from west-central Arctic National Wildlife Refuge-1002 Area. The tundra and lakes in this area displays a variety of patterns caused by permafrost.

View to the northeast towards Camden Bay from west-central Arctic National Wildlife Refuge-1002 Area. The tundra and lakes in this area displays a variety of patterns caused by permafrost.

near the Sadlerochit River
central ANWR-1002 Area near the Sadlerochit River
central ANWR-1002 Area near the Sadlerochit River
central ANWR-1002 Area near the Sadlerochit River

Northward view in central Arctic National Wildlife Refuge-1002 Area near the Sadlerochit River showing gently rolling topography typical of the southern coastal plain.

Northward view in central Arctic National Wildlife Refuge-1002 Area near the Sadlerochit River showing gently rolling topography typical of the southern coastal plain.

Grass carp larvae
Grass carp larvae
Grass carp larvae
Grass carp larvae

These images show grass carp larvae from the Maumee River. Characteristics of larval grass carp include overall length (left), skeletal muscle development (center) and presence of an eye spot that lacks pigmentation (right; pigment starting to develop on lower eye).

These images show grass carp larvae from the Maumee River. Characteristics of larval grass carp include overall length (left), skeletal muscle development (center) and presence of an eye spot that lacks pigmentation (right; pigment starting to develop on lower eye).

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