State scientists took a critical snow measurement in the Sierra yesterday. It's the most important snowpack survey of the
season, and it helps the state forecast the coming year's water supply. This year, state officials say there's a twist. Reporter: Sasha Khokha
As police in China continue to crack down on protesters in Tibet, another battle is being waged through the Internet. California-based
organizations supporting Tibetans have been targeted in sophisticated cyber-attacks designed to disrupt their work and gather
information on their members and activities. The attacks have increased since the uprising in Tibet began -- and they're being
traced to Internet servers in China. Reporter: Rob Schmitz