SEATTLE — An orca known as Tahlequah, who raised worldwide concern when she carried her dead calf for 17 days and more than 1,000 miles almost two years ago, is pregnant, scientists said.

Podcaster Show PlayerThe show had been shut down since veteran trainer Dawn Brancheau, 40, died Wednesday after rubbing a 22-foot, 12,000-pound orca named Tilikum. The animal grabbed her ponytail ...