"California drought: Past dry periods have lasted more than 200 years, scientists say" https://www.mercurynews.com/2014/01/25/california-drought-past-dry-period

"California drought: Past dry periods have lasted more than 200 years, scientists say" https://www.mercurynews.com/2014/01/25/california-drought-past-dry-periods-have-lasted-more-than-200-years-scientists-say/ https://www.mercurynews.com/2014/01/25/california-drought-pa...