While this is on the front page again, I wanted to make a mention of Joan Taylor, who discovered an aperiodic single tile, which she published with Joshua Socolar of Duke University. This is her bio blurb as it appears on their article in The Mathematical Intelligencer:

> JOAN M. TAYLOR took up mathematics in
1991 at age 34 after being inspired by a
magazine article on quasicrystals featuring
Penrose’s rhombus tiling. She began but did
not complete a degree, preferring to conduct
her own research. Since then she has pursued
tiling and related topics in abstract algebra and
number theory including original work on
constructible polygons. She likes to unwind
with knitting and reading.