Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Explore photos, graphics, and illustrations related to projects from across the CASC Network. And be sure to check out our Climate Illustrations page, featuring free-to-download illustrations that help describe tricky climate concepts and explain how climate change affects the world around us.
The Northeast Bedrock Mapping Project consists of scientists conducting geologic mapping and scientific research of complexly deformed crystalline igneous and metamorphic rocks in the Northeastern United States. Current mapping activities are focused in New Hampshire, Vermont, Connecticut, and New York.
The Northeast Bedrock Mapping Project consists of scientists conducting geologic mapping and scientific research of complexly deformed crystalline igneous and metamorphic rocks in the Northeastern United States. Current mapping activities are focused in New Hampshire, Vermont, Connecticut, and New York.
The iconic Sonoran Desert is home to many species of cactus, vascular plants, and wildlife, including the giant saguaro, cholla, and prickley pear cacti seen here. Plants and animals have adapted to living in such a harsh dry environment.
The iconic Sonoran Desert is home to many species of cactus, vascular plants, and wildlife, including the giant saguaro, cholla, and prickley pear cacti seen here. Plants and animals have adapted to living in such a harsh dry environment.
The Snake River is the largest tributary of the Columbia River. It drains over 108,000 square miles in mainly Idaho and portions of Montana, Nevada, Oregon, Washington, and Wyoming. The climate of much of the Snake River watershed is arid or semi-arid and spring snowmelt contributes substantially to the river’s flow.
The Snake River is the largest tributary of the Columbia River. It drains over 108,000 square miles in mainly Idaho and portions of Montana, Nevada, Oregon, Washington, and Wyoming. The climate of much of the Snake River watershed is arid or semi-arid and spring snowmelt contributes substantially to the river’s flow.
The Cle Elum River, a tributary of the Yakima River in Washington state. Sockeye salmon reintroduction efforts were initiated in the Cle Elum River by the Yakama Nation and Washington Department of Fish and Wildlife in 2009.
The Cle Elum River, a tributary of the Yakima River in Washington state. Sockeye salmon reintroduction efforts were initiated in the Cle Elum River by the Yakama Nation and Washington Department of Fish and Wildlife in 2009.
Northern Cascades landscape.
Cores were collected from various areas of thawing permafrost-peatlands in Alaska. Permafrost thaw results in ground subsidence and inundation that kills black spruce and other understory plants living on the permafrost plateau.
Cores were collected from various areas of thawing permafrost-peatlands in Alaska. Permafrost thaw results in ground subsidence and inundation that kills black spruce and other understory plants living on the permafrost plateau.
Dr. Erin Muths (ARMI scientist, USGS) sampling frogs at a field site on Mt. Evans, Colorado.
Dr. Erin Muths (ARMI scientist, USGS) sampling frogs at a field site on Mt. Evans, Colorado.
The San Rafael grasslands are a diverse ecosystem in southern Arizona along the U.S./Mexico border region, a part of the Madrean Archipelago ecoregion.
The San Rafael grasslands are a diverse ecosystem in southern Arizona along the U.S./Mexico border region, a part of the Madrean Archipelago ecoregion.
Inland fish are found in city waterways as in Hanoi, Vietnam.
Inland fish are found in city waterways as in Hanoi, Vietnam.
Toni Lyn Morelli (left) and Mary Ratnaswamy (right); White Mountain National Forest, NH; trapping red squirrels
Toni Lyn Morelli (left) and Mary Ratnaswamy (right); White Mountain National Forest, NH; trapping red squirrels
This image taken at the site of the 2015 Soda Wildfire shows the effect of aspect on plant communities in the sagebrush steppe. Aspect refers to the direction in which a landform, like these hills, is oriented in relation to the sun's path across the sky.
This image taken at the site of the 2015 Soda Wildfire shows the effect of aspect on plant communities in the sagebrush steppe. Aspect refers to the direction in which a landform, like these hills, is oriented in relation to the sun's path across the sky.
The sagebrush steppe of the western U.S., including the site of the 2015 Soda Wildfire pictured here, is vast and encompasses landscapes with variable elevation, weather, water availability, aspect, soil type, and more.
The sagebrush steppe of the western U.S., including the site of the 2015 Soda Wildfire pictured here, is vast and encompasses landscapes with variable elevation, weather, water availability, aspect, soil type, and more.
Looking out over a red alder forest with evergreen trees at Cascade Head Preserve in Oregon.
Looking out over a red alder forest with evergreen trees at Cascade Head Preserve in Oregon.
Annual tern census on Monomoy National Wildlife Refuge.
Annual tern census on Monomoy National Wildlife Refuge.
Pinus edulis on a rocky outcrop near Colorado National Monument. Photo by Andreas Wion (USGS).
Pinus edulis on a rocky outcrop near Colorado National Monument. Photo by Andreas Wion (USGS).
View of headscarp of Red Bluffs landslide (adjacent to the Bonneville landslide), looking northwest and showing the bedded volcaniclastic sediments (gray layers) that are dipping about 7 degrees toward the viewer and in which sliding has occurred. The slightly darker gray and orange-brown unit in the top quarter of the scarp face is Columbia River Basalt.
View of headscarp of Red Bluffs landslide (adjacent to the Bonneville landslide), looking northwest and showing the bedded volcaniclastic sediments (gray layers) that are dipping about 7 degrees toward the viewer and in which sliding has occurred. The slightly darker gray and orange-brown unit in the top quarter of the scarp face is Columbia River Basalt.
This photo was taken during a routine site visit to measure streamflow on the Rio Chama in New Mexico.
This photo was taken during a routine site visit to measure streamflow on the Rio Chama in New Mexico.
Adult alewife spring spawning migration at Stony Brook River in Brewster, Massachusetts. Credit: Michelle Staudinger
Adult alewife spring spawning migration at Stony Brook River in Brewster, Massachusetts. Credit: Michelle Staudinger
Dry Forest in southern Puerto Rico (Guánica municipality). Climate change is projected to make dry landscapes such as these even drier.
Dry Forest in southern Puerto Rico (Guánica municipality). Climate change is projected to make dry landscapes such as these even drier.
Invasive aquatic vegetation chokes Lindsey Slough, creating a potentially challenging environment for fish and other aquatic life. The slough is the site of a 2014 restoration project in the Sacramento-San Joaquin Delta to improve freshwater tidal marsh and spawning habitat for Delta smelt and other fish.
Invasive aquatic vegetation chokes Lindsey Slough, creating a potentially challenging environment for fish and other aquatic life. The slough is the site of a 2014 restoration project in the Sacramento-San Joaquin Delta to improve freshwater tidal marsh and spawning habitat for Delta smelt and other fish.