Winter freeze keeps citrus growers up at night

Extreme cold is a threat to California's $1-billion lemon, orange, tangerine and grapefruit crop. The next few nights will be critical.It's edging toward midnight and John Gless is keeping a wary eye on the thermometer as he patrols his family's 450 acres of citrus orchards outside Hemet.
Source: Los Angeles Times - Science - Category: Science Source Type: news