Guest Writer
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Magazine
In the Dec. 8 SN: Parkinson’s gut connections, beaver ecosystem engineering, Greenland’s hidden impact crater, the kilogram redefined, figurative cave art in Borneo, Dione’s stripes and more.
Amanda B. Keener's Articles
- Rethink
An eye disorder may have given Leonardo da Vinci an artistic edge
An analysis of portraits believed to portray Leonardo da Vinci offers evidence that the artist had exotropia, in which one eye turns outward.