T he annual Fourth of July fireworks show on the San Francisco waterfront started at about 9:30 p.m. on Friday. The fireworks were launched from two barges on San Francisco Bay, one located at Pier 39 and another located at Aquatic Park. The show went on for about 30 minutes.

"Disturbing roosting migratory birds at night can result in mass deaths," says Bateman. "Disturbing breeding birds can result in colony collapses. Seals and sea lions leave [affected] areas and expend energy swimming away during fireworks."

Investigators have located human remains following a large explosion at a Northern California fireworks warehouse

Seven people are still "unaccounted for" after several explosions at a fireworks warehouse resulted in a fire in Northern California's Yolo County, officials said.It happened Tuesday evening in the community of Esparto at Devastating Pyrotechnics.

The Yuba-Sutter fireworks show was pushed to July 5 "after thoughtful discussion and out of respect for those impacted by the explosion in Yolo County," organizers said in a statement. "Our hearts remain with the community of Esparto,