The Fort Worth Museum of Science and History celebrates a year in its new building with an all-day party Saturday. Admission is buy-one-get-one-for-$1, and you'll find $1 snacks and drinks and other special deals all day. The inimitable Eddie Coker performs at 1, 3 and 5 p.m. The first 300 kids get free mini-cupcakes at noon, when museum mascot Dynamo leads a Happy Birthday singalong. And all babies born Nov. 20, 2009 -- the museum's birthday -- are invited to take part in a photo to mark the moment. See the website for photo details.