MEXICO CITY – Gov. Jerry Brown, calling for “heroic efforts” to combat climate change, agreed with Mexican officials Monday to work together on policies to address air pollution and greenhouse gas emissions. Gov. Jerry Brown addressing reporters in a joint news conference with José Antonio Meade Kuribreña, Mexico’s foreign affairs secretary, in Mexico City, Mexico on July 28, 2014. Reporters in Mexico City wait for a joint news conference by California Gov.