PETA alleges 'cover-up' in death of 54 stingrays at Brookfield Zoo, lawsuit says

People for the Ethical Treatment of Animals is suing for documents that could shed light on the 2015 deaths of 54 stingrays that were part of an exhibit at the Brookfield Zoo.

For several years now, the animal rights group has asked the Forest Preserves of Cook County, which in partnership with...