DENVER — Porcupine quills, Elk teeth, Dentalium shells, and feathers are Indigenous art materials that predate the European introduction of colorful beads. Of these ancient materials, quills can be ...
CAMBRIDGE, MA -- Anyone unfortunate enough to encounter a porcupine's quills knows that once they go in, they are extremely difficult to remove. Researchers at MIT and Brigham and Women's Hospital now ...
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