BERKELEY, CA --
Security officials at Lawrence Berkeley Lab are warning visitors who want to attend Saturday's open house event about mountain lions in the area.Workers say they've seen a mother and her two cubs roaming the hills and they've also spotted the carcasses of deer and goats that appear to have been mauled.
The lab is just up the hill from Berkeley's Gourmet Ghetto, where Berkeley police shot and killed a mountain lion in August.