Looking for short story I read years ago in a science fiction
anthology. I can't recall the name or author.

The basic gist of the story was that a hard scientist (physicist?) bet
a sociologist that the sociologist could not apply their specialty in
the real world. The sociologist creates a club (women's sewing?) that
spreads around the world.

This is "The Snowball Effect" by Katherine Maclean; first published in
Galaxy Science Fiction, September, 1952; reprinted in "The Second
Galaxy Reader of Science Fiction" (H. L. Gold, ed., 1954) and many
other anthologies.

That's the one. Thanks! I'm cusrious to know whether you just knew the
story or there was a way to search for it.

The disappointing answer is that I just knew it, and was able to
double-check my answer (but I mistyped the author's name, which should
be MacLean with a capital L) with my personal collection of old
magazines and anthologies. Otherwise, I've found the group
rec.arts.sf.written (Google Groups) to be a good source of (free)
answers to this particular type of question.