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Image: U.S. Capitol Gatehouse
U.S. Capitol Gatehouse
U.S. Capitol Gatehouse
U.S. Capitol Gatehouse

This gatehouse is made of Aquia Creek sandstone, the same material used to build much of the U.S. Capitol building. It stands at the intersection of 17th Street, NW, and Constitution Avenue.

This gatehouse is made of Aquia Creek sandstone, the same material used to build much of the U.S. Capitol building. It stands at the intersection of 17th Street, NW, and Constitution Avenue.

Image: U.S. Capitol Gatepost
U.S. Capitol Gatepost
U.S. Capitol Gatepost
U.S. Capitol Gatepost

This U.S. Capitol gatepost was built circa 1827 and is made of Aquia Creek Sandstone, the same material that makes up most of the U.S. Capitol building. It stands at the intersection of 15th Street, NW, and Constitution Avenue.

This U.S. Capitol gatepost was built circa 1827 and is made of Aquia Creek Sandstone, the same material that makes up most of the U.S. Capitol building. It stands at the intersection of 15th Street, NW, and Constitution Avenue.

Image: Red Seneca Sandstone
Red Seneca Sandstone
Red Seneca Sandstone
Red Seneca Sandstone

This is red Seneca sandstone, the building block of the Smithsonian Castle. It originated in a quarry on the shores of the Potomac River in Maryland, and is more than 200 million years old.

This is red Seneca sandstone, the building block of the Smithsonian Castle. It originated in a quarry on the shores of the Potomac River in Maryland, and is more than 200 million years old.

Image: Russian Crown Jewels from the USGS Library
Russian Crown Jewels from the USGS Library
Russian Crown Jewels from the USGS Library
Russian Crown Jewels from the USGS Library

Previously undiscovered photo of undocumented Russian Crown Jewels were recently discovered in the USGS library. The photo appear in a 1922 album called "Russian Diamond Fund," that was uncovered in the rare book room of the library. This necklace was one of the four undocumented jewels.

Previously undiscovered photo of undocumented Russian Crown Jewels were recently discovered in the USGS library. The photo appear in a 1922 album called "Russian Diamond Fund," that was uncovered in the rare book room of the library. This necklace was one of the four undocumented jewels.

Image: Russian Crown Jewels from the USGS Library
Russian Crown Jewels from the USGS Library
Russian Crown Jewels from the USGS Library
Russian Crown Jewels from the USGS Library

Previously undiscovered photo of undocumented Russian Crown Jewels were recently discovered in the USGS library. The photo appear in a 1922 album called "Russian Diamond Fund," that was uncovered in the rare book room of the library. This diadem was one of the four undocumented jewels.

Previously undiscovered photo of undocumented Russian Crown Jewels were recently discovered in the USGS library. The photo appear in a 1922 album called "Russian Diamond Fund," that was uncovered in the rare book room of the library. This diadem was one of the four undocumented jewels.

Image: Endangered Hawaiian Hoary Bat
Endangered Hawaiian Hoary Bat
Endangered Hawaiian Hoary Bat
Endangered Hawaiian Hoary Bat

An endangered Hawaiian hoary bat, a species that is sometimes killed by wind turbines.

An endangered Hawaiian hoary bat, a species that is sometimes killed by wind turbines.

Image: Tree-Killing Las Conchas Fire in New Mexico
Tree-Killing Las Conchas Fire in New Mexico
Tree-Killing Las Conchas Fire in New Mexico
Tree-Killing Las Conchas Fire in New Mexico

USGS scientist Craig D. Allen observes the results of the extensive, tree-killing fire that consumed almost all above-ground biomass in this part of the Las Conchas Fire burn area in the Jemez Mountains, New Mexico. Photo taken in late August 2011, two months post-fire.

USGS scientist Craig D. Allen observes the results of the extensive, tree-killing fire that consumed almost all above-ground biomass in this part of the Las Conchas Fire burn area in the Jemez Mountains, New Mexico. Photo taken in late August 2011, two months post-fire.

Image: USGS Researcher at Mesa Alta, New Mexico
USGS Researcher at Mesa Alta, New Mexico
USGS Researcher at Mesa Alta, New Mexico
USGS Researcher at Mesa Alta, New Mexico

USGS researcher Craig Allen stands on the edge of Mesa Alta, amid diverse forest and woodland in the uplands of northern New Mexico; note some recently dead ponderosa pine and Douglas-fir in the field of view. Forest drought stress is strongly correlated with tree mortality from poor growth, bark beetle outbreaks, and high-severity fire.

USGS researcher Craig Allen stands on the edge of Mesa Alta, amid diverse forest and woodland in the uplands of northern New Mexico; note some recently dead ponderosa pine and Douglas-fir in the field of view. Forest drought stress is strongly correlated with tree mortality from poor growth, bark beetle outbreaks, and high-severity fire.

Image: A Record-Breaking Invasive Burmese Python
A Record-Breaking Invasive Burmese Python
A Record-Breaking Invasive Burmese Python
A Record-Breaking Invasive Burmese Python

This female Burmese python broke the records for her length - 17 feet, 7 inches - and the number of eggs she contained: 87. She was first captured in Everglades National Park by USGS researchers in the spring of 2012, when they followed a "Judas snake" - a male python with a transmitter - and found her nearby in the bushes.

This female Burmese python broke the records for her length - 17 feet, 7 inches - and the number of eggs she contained: 87. She was first captured in Everglades National Park by USGS researchers in the spring of 2012, when they followed a "Judas snake" - a male python with a transmitter - and found her nearby in the bushes.

Image: Tephra Sampling
Tephra Sampling
Tephra Sampling
Tephra Sampling

Temphra sampling done by Kristi Wallace.

Image: Rockfishes Inhabit Oil Platforms
Rockfishes Inhabit Oil Platforms
Rockfishes Inhabit Oil Platforms
Rockfishes Inhabit Oil Platforms

Rockfishes inhabit oil platforms offshore of California.

 

Image: Black-necked Stilt Chick
Black-necked Stilt Chick
Black-necked Stilt Chick
Black-necked Stilt Chick

Birds found in and around the Salton Sea, California.

Birds found in and around the Salton Sea, California.

Image: Black-necked Stilt Male
Black-necked Stilt Male
Black-necked Stilt Male
Black-necked Stilt Male

Birds found in and around the Salton Sea, California.

Birds found in and around the Salton Sea, California.

Image: School Construction in Indian Country
School Construction in Indian Country
School Construction in Indian Country
Image: Road Repair in Indian Country
Road Repair in Indian Country
Road Repair in Indian Country
Image: Road Repair in Indian Country
Road Repair in Indian Country
Road Repair in Indian Country
Image: Road Repair in Indian Country
Road Repair in Indian Country
Road Repair in Indian Country
Image: Road Repair in Indian Country
Road Repair in Indian Country
Road Repair in Indian Country
Image: Road Repair in Indian Country
Road Repair in Indian Country
Road Repair in Indian Country
Image: Proposed Construction Site at Audubon NWR
Proposed Construction Site at Audubon NWR
Proposed Construction Site at Audubon NWR
Proposed Construction Site at Audubon NWR

This is a view of the plot of land at Audubon National Wildlife Refuge selected for the Headquarters and Visitor Center that will be built with Recovery Act funding. Related to the R6BB — Construct Headquarters Visitor Building — Audubon NWR project.

This is a view of the plot of land at Audubon National Wildlife Refuge selected for the Headquarters and Visitor Center that will be built with Recovery Act funding. Related to the R6BB — Construct Headquarters Visitor Building — Audubon NWR project.

Image: Sweetwater Marsh Unit of San Diego Bay NWR
Sweetwater Marsh Unit of San Diego Bay NWR
Sweetwater Marsh Unit of San Diego Bay NWR
Sweetwater Marsh Unit of San Diego Bay NWR

A view of the landscape at the Sweetwater Marsh Unit of San Diego Bay National Wildlife Refuge; Recovery Act funding will enable the refuge to build a new Visitor Center to better serve the public. Related to the R8AA — Construct Headquarters Visitor Building — San Diego Bay NWR project.

A view of the landscape at the Sweetwater Marsh Unit of San Diego Bay National Wildlife Refuge; Recovery Act funding will enable the refuge to build a new Visitor Center to better serve the public. Related to the R8AA — Construct Headquarters Visitor Building — San Diego Bay NWR project.

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