National Geographic: Rain has been soaking much of California this week, but the inches of much needed water are only a drop in the bucket amid the worst drought in the state's recorded history, experts warn.
"The rain is welcome-it sure helps-but one good storm is not enough," says Jeffrey Lorens, a meteorologist with the National Weather Service's Western Region. "We're still in a drought, and we will be for some time."
The rain threatens many areas of California with floods and mudslides, largely because of...