The Amazing Ultrastructure of Snowflakes

They say that no two snowflakes are alike. But all of them share one thing: They are beautiful at any level of magnification. The Electron and Confocal Microscopy Laboratory, Agricultural Research Service, U. S. Department of Agriculture, showcases tons of stunning EM images of snowflakes and snow crystals on their website. I have selected a few of my favourites, but their gallery is worth a visit or two.