> They still design nuclear weapons in Berkeley?
Not for many decades :-)
There's a DOE lab (Lawrence Berkeley National Lab) but all the classified work got moved out to Sandia and Livermore a long time ago (some time in the 50s?).
Besides, haven't you heard? Berkeley is Nuclear Free!
http://www.ci.berkeley.ca.us/bmc/berkeley_municipal_code/Title_12/90/index.html
/jordan