Varieties of succulents are used on the green roofs of the William A. Jones III building and the Air National Guard Readiness Center on Joint Base Andrews, Md. The environmentally friendly roofs reduce building energy use and contribute to the Leadership in Energy and Environmental Design certification. ( Air Force photo by Airman 1st Class Rustie Kramer)

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Size: 5144px × 3429px
Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
Model Released: No

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