Thinking small: Uncovering the secrets of micrometeorites

As I look down into a Petri dish of sand through a binocular microscope, the larger grains become obelisks, with smaller ones forming avenues between them. It’s a microscopic echo of the Chicago skyline that I can see through the window when I look up. I’m at the Field Museum of Natural History, home toContinue reading “Thinking small: Uncovering the secrets of micrometeorites”
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