The largest wildfire in California so far this year is burning out of control in the Mojave National Preserve and had torn through 70,000 acres of juniper and Joshua tree woodland as of Sunday night.  The York Fire that ignited Friday near the remote Caruthers Canyon area of the vast wildland preserve crossed the state line into Nevada on Sunday and sent smoke further east into the Las Vegas Valley. … Experts predicted that big fires would burn in the desert regions this year due to the wet winter that promoted grass growth in desert areas.