<p><a href="https://en.wikipedia.org/wiki/Margaret_Wertheim" class="extiw" title="w:Margaret Wertheim">Margaret Wertheim</a> speaking at <a href="https://en.wikipedia.org/wiki/TED_(conference)" class="extiw" title="w:TED (conference)">TED</a>
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Wertheim showing off some hyperbolic surfaces that can only be created through crochet.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/78042080@N00">Erik Charlton</a> from Menlo Park, USA
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/78042080@N00/3337433632/">Crocheting tales about mathematics</a>