(Image credit: Flickr user racineur)A previously...  ...ratium (Figure 6) is made of material that is an artificial mixture or conglomeration of rocks and minerals,...  ...k, N.Y. in 2002, deposited in the Foundation for Artificial Knowledge Education (FAKE) herbarium. Common...

(vimeo link) In 1933, observing natural snow, U...  ...ersity Press published Snow Crystals: Natural and Artificial , a book that still serves as a classic reference...