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Explore our planet through photography and imagery, including climate change and water all the way back to the 1800s when the USGS was surveying the country by horse and buggy.

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Image: Cave Bacon in Jewel Cave
Cave Bacon in Jewel Cave
Cave Bacon in Jewel Cave
Cave Bacon in Jewel Cave

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

In the center of the image, a formation known as cave bacon can be seen.

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

In the center of the image, a formation known as cave bacon can be seen.

Image: Cross-section of Calcite Crystal Covering in Jewel Cave
Cross-section of Calcite Crystal Covering in Jewel Cave
Cross-section of Calcite Crystal Covering in Jewel Cave
Cross-section of Calcite Crystal Covering in Jewel Cave

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

A cross-sectional view of the crystal coating can be seen in the center of the image, with the surface of the calcite crystals at the top of the image.

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

A cross-sectional view of the crystal coating can be seen in the center of the image, with the surface of the calcite crystals at the top of the image.

Image: Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

On the righthand side of the image, some of this coating of calcite crystals can be seen. These crystals are made up of two primary types: dogtooth spar and nailhead spar.

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

On the righthand side of the image, some of this coating of calcite crystals can be seen. These crystals are made up of two primary types: dogtooth spar and nailhead spar.

Image: Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

In the center of the image, some of this coating of calcite crystals can be seen. These crystals are made up of two primary types: dogtooth spar and nailhead spar.

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

In the center of the image, some of this coating of calcite crystals can be seen. These crystals are made up of two primary types: dogtooth spar and nailhead spar.

Image: Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

In the center of the image, some of this coating of calcite crystals can be seen. These crystals are made up of two primary types: dogtooth spar and nailhead spar.

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

In the center of the image, some of this coating of calcite crystals can be seen. These crystals are made up of two primary types: dogtooth spar and nailhead spar.

Image: Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave
Dogtooth and Nailhead Spar in Jewel Cave

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

In the center of the image, some of this coating of calcite crystals can be seen. These crystals are made up of two primary types: dogtooth spar and nailhead spar.

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

In the center of the image, some of this coating of calcite crystals can be seen. These crystals are made up of two primary types: dogtooth spar and nailhead spar.

Image: Flowstone Formations in Jewel Cave
Flowstone Formations in Jewel Cave
Flowstone Formations in Jewel Cave
Flowstone Formations in Jewel Cave

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

juvenile kiyi
Juvenile Lake Superior Kiyi 2015
Juvenile Lake Superior Kiyi 2015
Juvenile Lake Superior Kiyi 2015

A juvenile kiyi caught during a 2015 survey in Lake Superior.  These fish were used in a genetics study how vision adapts to differing light conditions. These fish are inhabit deeper waters than many other coregonine species in Lake Superior and have adapted to the lower light levels.

A juvenile kiyi caught during a 2015 survey in Lake Superior.  These fish were used in a genetics study how vision adapts to differing light conditions. These fish are inhabit deeper waters than many other coregonine species in Lake Superior and have adapted to the lower light levels.

Image: Mule Ear Drapery in Jewel Cave
Mule Ear Drapery in Jewel Cave
Mule Ear Drapery in Jewel Cave
Mule Ear Drapery in Jewel Cave

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

In the center of this image, a cave formation known as mule-ear drapery can be seen.

Jewel Cave is currently the 3rd most extensive cave network in the world. It is believed to have formed completely underwater, thus leading to the extensive coating of calcite crystals.

In the center of this image, a cave formation known as mule-ear drapery can be seen.

Piping plover chicks concealed on a sandy beach
Piping plover chicks concealed on a sandy beach
Piping plover chicks concealed on a sandy beach
Piping plover chicks concealed on a sandy beach

Piping plover chicks are well concealed in shallow nests on sandy beaches.

Pitcher's Thistle Sleeping Bear Dunes National Lakeshore
Pitcher's Thistle Sleeping Bear Dunes National Lakeshore
Pitcher's Thistle Sleeping Bear Dunes National Lakeshore
Pitcher's Thistle Sleeping Bear Dunes National Lakeshore

Pitcher's Thistle Sleeping, Bear Dunes National Lakeshore, MI. Lake Michigan is pictured in the background.

Pitcher's Thistle Sleeping, Bear Dunes National Lakeshore, MI. Lake Michigan is pictured in the background.

Sagebrush seedlings
Sagebrush seedlings in Birds of Prey National Conservation Area
Sagebrush seedlings in Birds of Prey National Conservation Area
Sagebrush seedlings in Birds of Prey National Conservation Area

Sagebrush seedlings grown at Birds of Prey National Conservation Area before outplanting to sites at BOP NCA in Nov 2012 in sites previously burned in wildfire summer 2012

Sagebrush seedlings grown at Birds of Prey National Conservation Area before outplanting to sites at BOP NCA in Nov 2012 in sites previously burned in wildfire summer 2012

Image: Bait-Colored Prairie Dog Excrement
Bait-Colored Prairie Dog Excrement
Bait-Colored Prairie Dog Excrement
Bait-Colored Prairie Dog Excrement

This image was taken during field tests to determine the effectiveness of a USGS-developed oral sylvatic plague vaccine (SPV) to help immunize prairie dogs against plague. The SPV is administered to wild prairie dogs via a brightly colored bait.

This image was taken during field tests to determine the effectiveness of a USGS-developed oral sylvatic plague vaccine (SPV) to help immunize prairie dogs against plague. The SPV is administered to wild prairie dogs via a brightly colored bait.

Image: Cages Next to Prairie Dog Hole
Cages Next to Prairie Dog Hole
Cages Next to Prairie Dog Hole
Cages Next to Prairie Dog Hole

Cages are set up next to a prairie dog burrow at the Pitchfork Ranch in Wyoming to capture free-ranging prairie dogs. Once captured, each trapped prairie dog is tagged, and a scientist takes hair, whisker, and blood samples before the animals are released back into the wild. 

Cages are set up next to a prairie dog burrow at the Pitchfork Ranch in Wyoming to capture free-ranging prairie dogs. Once captured, each trapped prairie dog is tagged, and a scientist takes hair, whisker, and blood samples before the animals are released back into the wild. 

Image: Normal Versus Bait-Laden Prairie Dog Feces
Normal Versus Bait-Laden Prairie Dog Feces
Normal Versus Bait-Laden Prairie Dog Feces
Normal Versus Bait-Laden Prairie Dog Feces

This image was taken during field tests to determine the effectiveness of a USGS-developed oral sylvatic plague vaccine (SPV) to help immunize prairie dogs against plague. The SPV is administered to wild prairie dogs via a brightly colored bait.

This image was taken during field tests to determine the effectiveness of a USGS-developed oral sylvatic plague vaccine (SPV) to help immunize prairie dogs against plague. The SPV is administered to wild prairie dogs via a brightly colored bait.

Image: Pitchfork Ranch, Wyoming
Pitchfork Ranch, Wyoming
Pitchfork Ranch, Wyoming
Pitchfork Ranch, Wyoming

Over 30 organizations and agencies are testing a USGS-developed oral sylvatic plague vaccine (SPV) at sites such as the Pitchfork Ranch in Wyoming, pictured here. If successful, the SPV could help protect endangered black-footed ferret populations in the western

Over 30 organizations and agencies are testing a USGS-developed oral sylvatic plague vaccine (SPV) at sites such as the Pitchfork Ranch in Wyoming, pictured here. If successful, the SPV could help protect endangered black-footed ferret populations in the western

Image: Plague Vaccine Bait
Plague Vaccine Bait
Plague Vaccine Bait
Plague Vaccine Bait

The USGS developed an oral sylvatic plague vaccine (SPV) to help immunize prairie dogs against plague. The SPV is administered via a brightly colored, peanut butter flavored bait.

The USGS developed an oral sylvatic plague vaccine (SPV) to help immunize prairie dogs against plague. The SPV is administered via a brightly colored, peanut butter flavored bait.

Image: Prairie Dog Hole, Pitchfork Ranch, WY
Prairie Dog Hole, Pitchfork Ranch, WY
Prairie Dog Hole, Pitchfork Ranch, WY
Prairie Dog Hole, Pitchfork Ranch, WY

The image was taken during field tests to determine the effectiveness of a USGS-developed oral sylvatic plague vaccine (SPV) to help immunize prairie dogs against plague. The SPV is administered to wild prairie dogs via a brightly colored bait.

The image was taken during field tests to determine the effectiveness of a USGS-developed oral sylvatic plague vaccine (SPV) to help immunize prairie dogs against plague. The SPV is administered to wild prairie dogs via a brightly colored bait.

USGS scientist collecting groundwater samples
Sampling Groundwater for poly- and Perfluoroalkyl Substances
Sampling Groundwater for poly- and Perfluoroalkyl Substances
Sampling Groundwater for poly- and Perfluoroalkyl Substances

U.S. Geological Survey (USGS) scientist collecting groundwater samples for analysis of poly- and perfluoroalkyl substances (PFASs) from a multiport monitoring well downgradient from a former fire-training area on western Cape Cod, Massachusetts.

U.S. Geological Survey (USGS) scientist collecting groundwater samples for analysis of poly- and perfluoroalkyl substances (PFASs) from a multiport monitoring well downgradient from a former fire-training area on western Cape Cod, Massachusetts.

Image: Tagged Prairie Dog
Tagged Prairie Dog
Tagged Prairie Dog
Tagged Prairie Dog

This wild prairie dog has been tagged by scientists in an effort to study the efficacy of a USGS-developed oral sylvatic plague vaccine (SPV) to help immunize prairie dogs against plague.

This wild prairie dog has been tagged by scientists in an effort to study the efficacy of a USGS-developed oral sylvatic plague vaccine (SPV) to help immunize prairie dogs against plague.

USGS employee measuring snowmelt runoff Clear Creek below Quayle Creek at Bakersville, CO
USGS Employee Measuring Snowmelt Runoff At Clear Creek,Bakersville, CO
USGS Employee Measuring Snowmelt Runoff At Clear Creek,Bakersville, CO
USGS Employee Measuring Snowmelt Runoff At Clear Creek,Bakersville, CO

USGS employee measuring snowmelt runoff Clear Creek below Quayle Creek at Bakersville, CO

USGS employee measuring snowmelt runoff Clear Creek below Quayle Creek at Bakersville, CO

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