The California Public Utilities Commission has officially approved a 1.6 billion dollar fine for utility company PG&E as a result of the fatal 2010 gas pipeline explosion in San Bruno. It’s the largest fine of a utility company in California history, but some activists, as well as CPUC commissioners, are questioning whether it’s enough to lead to changes in the utility company’s practices. The chair of the commission is even questioning whether PG&E is too big to be safe. Christopher Martinez reports from San Francisco.