Gold for teenage stars McIntosh, Popovici at swimming worldsCanadian teenager Summer McIntosh has won the womenโs 200 butterfly for her first title at the world swimming championships.
Northern lights: Alaska teen shocks with Olympic swim goldAlaska, of all places, has an Olympic champion at the pool.
Swim showdown: US star Ledecky, Aussie to battle for goldKatie Ledecky opened her Olympic program as the top qualifier in the 400-meter freestyle, setting up a showdown with Ariarne Titmus of Australia.