Southern California

Science, Tech & Environment

From toilet to tap

Orange County, CA has opened what is likely the largest sewage purification plant for drinking water in the world. The community is on board, and the idea is already being copied elsewhere in the U.S. and abroad. Living on Earth's Ingrid Lobet reports.

Big Buffett Solar Buy

Warren Buffet began the new year with a bang, spending around $2.5 billion to acquire two more solar projects in California.