Seven semis were involved in the crash on I-25, police said.

Nancy Guthrie has been missing since Feb. 1, and two ransom deadlines have passed.

Yang said artificial intelligence will continue to replace white collar workers.

California officials said rescuers took risks and faced "extreme weather conditions" as they raced to find survivors of the deadly avalanche near Castle Peak.

Six skiers were rescued on Tuesday in the Castle Peak area of the Sierra Nevada.