Simone Biles Is Taking Her Sport to New Heights

No apparatus is more precarious for female gymnasts than the balance beam. Staying on the beam--which is 4 ft. off the ground, 16 ft. long and just 4 in. wide, not much wider than a credit card--is challenge enough, never mind trying to make an art out of getting off it. Yet at the recent Olympic trials in San Jose, Calif., Simone Biles flipped to one edge and propelled herself into the air, turning two backflips and then a twisting somersault with a nearly inhuman hang time.