Narrator: This is Science Today. Tens of thousands of oak trees along California's northern and central coast regions, as well as southwestern Oregon, are dying of a fungal disease called Sudden Oak Death Syndrome. While there were concerns about the disease possibly spreading to other areas - and even other states - for now it seems to be primarily confined to the northern half of California. Still, Dennis Pittenger, an urban horticulture scientist at the University of California, Riverside, says researchers are still puzzled by its origins and don't yet know how to stop its movement.
Pittenger: This is attacking several native species of oak and we're looking at up to an eighty percent mortality rating of trees that do become affected by this.
Narrator: Researchers are still trying to solve the problem in what's becoming a race against time.
Pittenger: But we're continuing to look for clues as to how to control it and how it moves and how it spreads and we're just hoping to find out as much as possible as soon as possible, so that we can get some answers to these questions.
Narrator: For Science Today, I'm Larissa Branin.