This Smithsonian Institution touring exhibition is making the rounds.

They also have a very good website.
http://www.keyingredients.org/default.asp


Schedule for 2008:
http://www.keyingredients.org/000_venues/000_venues_01.asp?year=2008

That was very interesting - thanks for the info! The traveling exhibit will also be in my general area.

well that stinks. They were in my area....twice....in january, march-april. bummer!