William Mullen

A federal agency Thursday cleared Lincoln Park Zoo's safety and security measures of any blame for the Sept. 9 lion attack and mauling of a keeper in the zoo's yard...

Excavating the ruins of Kish more than 70 years ago, archeologists from the Field Museum and England's Oxford University recovered more than 100,000 artifacts among the toppled temples, royal palaces...

The Field Museum is preparing to sell 31 American Indian portraits and Western scenes by 19th Century artist/adventurer George Catlin, a move the museum says will raise millions for its...

A female African elephant that collapsed and died as keepers arrived at Lincoln Park Zoo early Saturday apparently had tuberculosis, raising concerns that other animals might be infected with the...

Atop a steep-sided mountain in Peru on the cold, mist-shrouded morning of July 24, 1911, Yale University historian Hiram Bingham stumbled through dense cloud forest undergrowth into ancient stone ruins...

A museum dedicated to examining the principles of freedom in America is planning a grand opening in 2006 in one of the busiest and most prominent locations in the city....

In 1947, already a prolific, somewhat renowned, iconoclastic author of letters to the editors of the nation's newspapers, Hank Oettinger decided to campaign against the plan to rename Colorado's Boulder...

Four new permanent exhibits at the Peggy Notebaert Nature Museum should maintain its reputation as a place that does not sugarcoat its lessons of how nature works. Since the Lincoln...

Mauyak, a 22-year-old who is getting on in years by female beluga whale standards, has surprised Shedd Aquarium marine mammal experts by becoming pregnant. Early this year, Shedd officials brought...

Keepers arriving for work at Lincoln Park Zoo's new African ape house at 7 a.m. Monday were surprised to find somebody who hadn't been there when the building was locked...