The Sand Remembers Everything Those ripples in the sand you…

The Sand Remembers Everything
Those ripples in the sand you smooth with your footprints? They're recording the desert's autobiography in a language scientists are only beginning to read. Each grain's journey—from mountain to dust, carried by wind, shaped by time—is written in microscopic scratches on its surface. Geologists can look at a single grain and tell you which mountain it came from, how far it traveled, how many times it was buried and excavated. The desert keeps a journal. Every grain is a page. !nb