Morning Wrap: 12/19/12

California regulators turn their attention to fracking, brouhaha over a new South Bay gun shop after Newtown tragedy, 60-car pile-up on Interstate 5 near Oregon border, more.

• Mark Zuckerberg plans to donate $500 million in Facebook stock to the Silicon Valley Community Foundation. Mercury News
• California released draft regulations for hydraulic fracturing, or fracking, the controversial practice by which chemicals are injected into underground rock to free oil and gas. Mercury News
• Twelve people in a Marin mobile home park were taken to hospitals after being exposed to a pesticide while someone was using a fogger to exterminate fleas. Bay City News Service
• The $3 fare on the Muir Woods Shuttle, a cooperative venture between the National Park Service and Marin County, will likely go up to $4 next year. Marin IJ
• Local fallout from the Newtown tragedy—there’s concern about a gun store scheduled to open in Los Gatos this week. ABC 7
• A 60-car pile-up last night closed Interstate 5 near the Oregon border. AP