![](https://nsf-gov-resources.nsf.gov/styles/mobile_full_width/s3/2022-08/Zoom_Castle_Rock.jpg?VersionId=lNONaLuri38KKfOYFecGpgsGxVlhE5GM&itok=nBi1_Bh9)
Credit: Joshua Swanson; Source: U.S. Antarctic Program photo library
![glaciers](https://nsf-gov-resources.nsf.gov/styles/mobile_full_width/s3/2023-06/Zoom_Polar_glacier.jpg?VersionId=BC7Ggz3ADhzsaXa78J.Mu66MAZjhxqOC&itok=WHkxbrva)
Credit: Gifford H. Miller, INSTAAR, University of Colorado Boulder
![](https://nsf-gov-resources.nsf.gov/styles/mobile_full_width/s3/2022-08/Zoom_Palmer_Station.jpg?VersionId=8Rhu8XExMmOUBDuBqPY1stK.Dz5msZQQ&itok=BSEOCUhJ)
Credit: Kelly Jaques
![](https://nsf-gov-resources.nsf.gov/styles/mobile_full_width/s3/2022-08/Zoom_RK_sikuliag.jpg?VersionId=jP.0oJwzQhHqYPFjNtVT5yoGJHJdfc2w&itok=M5bPSo9e)
Credit: Kimberly Kenny
![Antarctic](https://nsf-gov-resources.nsf.gov/styles/mobile_full_width/s3/2023-04/Zoom_Antarctic_night.jpg?VersionId=otA0DRH8Nb9OUnlDVFqAHDTSd99Ywc1b&itok=QQrVeTEk)
Credit: J. Meng, American Museum of Natural History
![Antarctica](https://nsf-gov-resources.nsf.gov/styles/mobile_full_width/s3/2023-04/Zoom_Antarctic_Fieldsite.jpg?VersionId=WjGJFZvKDhBAy1mLRpPi_H_AEXVB3yJq&itok=Q-lL_DUj)
Credit: J. Meng, American Museum of Natural History
Credit: Perri Barbour