Gary Greenberg, the director of the Microscopy & Microanalysis Laboratory at the University of Hawaii Institute for Astronomy in Maui, HI, is a sand artist. No, he doesn't make elaborate sculptures out of sand. Instead, he photographs sand grains using a high definition, 3D light microscope he invented as a professor at the University of Southern California. The results are surprisingly beautiful. In fact, he published a book about them, called A Grain of Sand.
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