NASA image: Sedimentary signs of a Martian lakebed

This evenly layered rock photographed by the Mast Camera (Mastcam) on NASA's Curiosity Mars Rover shows a pattern typical of a lake-floor sedimentary deposit not far from where flowing water entered a lake.

Teams search for clues about ancient, recent fires

On a quest to learn more about fires in the Northern Rockies, Montana State University, Salish Kootenai College and federal researchers are looking to the trees, lakes and oral tradition for insights they can share with land ...

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