When news broke about a brush fire that started in Mission Viejo earlier this week, it came as a bit of deja vu for UC Irvine Professor James Earthman. "I was a bit disappointed that this was still occurring, particularly at a golf course that a fire had already occurred." Two years ago we interviewed Professor Earthman about a study he had done that found titanium clubs could spark brush fires in just that way and one of the cases cited came from that very same golf course in Mission Viejo.