Cal Day From 9 a.m. – 4 p.m. Saturday

Cal Day is said to be a pretty spectacular event, especially if you have kids. Reader Katharine Mieszkowski, with two young kids, says: "You must, must cover it!"

From the Cal press release:

WHAT
Cal Day, the University of California, Berkeley’s free, annual public open house, with more than 370 events. Some 40,000 visitors are expected to visit the campus’s museums, labs, performance halls, classrooms and more. 

WHEN
9 a.m. – 4 p.m., Saturday, April 21

WHERE
Events are scheduled throughout the entire UC Berkeley campus and up the hill at the Lawrence Hall of Science, UC Botanical Garden and Space Sciences Laboratory.

DETAILS
In keeping with this year’s Cal Day theme, “Expand Your Universe,” Chancellor Robert Birgeneau will interview Saul Perlmutter, who won a Nobel Prize in Physics in 2011 for his part in the discovery that the expansion of the universe was accelerating.

Other Cal Day speakers will include former U.S. Labor Secretary Robert Reich, a UC Berkeley professor of public policy, who will analyze political civility, and author Mary Roach, who will offer her take on UC Berkeley’s famous museum collections in her talk, “Shrunken Heads and Edible Spacesuits.”

Visitors will have free access to museums normally closed to the general public, such as the Museum of Vertebrate Zoology and the Essig Museum of Entomology, where plenty of bug, bone and other biological specimens can be viewed up close.