Eight backcountry skiers have been found dead and one remains missing after an avalanche near Lake Tahoe in California, officials said on Wednesday, making it the deadliest avalanche in the US in more than four decades. Nevada County Sheriff Shannan Moon said during a news conference that authorities have told the families the mission has moved from rescue to recovery. It is the deadliest avalanche in the US since 1981, when 11 climbers were killed on Mount Rainier, Washington. Crews have faced...