Over the years San Ysidro residents have expressed concern about air pollution generated by the busiest border crossing into Mexico, pointing to an unusually high number of asthma cases. Now, as the U.S. government works to expand the port of entry, residents are spearheading their own air-pollution study.

A 2003 state law aims to protect school children from harmful traffic pollution. More than three-dozen San Diego County schools sit within the danger zone near major roadways – but they’re all exempt from the law.

The attorney general just slapped down San Diego County’s $200
billion transportation plan for the future. We explain why so many
around the state care about what’s going on here.

San Diego is planning transit for its future as a high-tech