American rock climber Alex Honnold is attempting to ascend a 101-story skyscraper in Taiwan — with no ropes or safety net — in an event broadcast live.

U.S. climber Alex Honnold scaled the Taipei 101 skyscraper without ropes or safety netting on Sunday, watched by thousands of cheering and waving fans as he clambered up one of the world's tallest bui...

Honnold, who was the subject of the Oscar-winning climbing documentary “Free Solo,” said in interviews prior to the climb that his “life was on the line” in attempting this mission.