William Mullen

A turkey-size, carnivorous dinosaur that looked something like a diminutive but malevolent version of Big Bird from "Sesame Street" is changing scientists' thinking about when and where some of the...

After Liberty Bell 7 sank three miles to the bottom of the Atlantic Ocean shortly after completing America's second manned ride into space in 1961, nobody expected to see the...

For 30 years, "Site Q" has been a mystery name anthropologists attached to an unknown, ancient Mayan city that was the source of exquisite looted artworks and hieroglyphs showing up...

With the vaultlike reptile house serving as a sort of Noah's Ark for humans, 14 keepers at New Orleans' Audubon Zoo rode out Hurricane Katrina on Aug. 29. When the...

In 1890, when planning was just beginning for what would become Chicago's glittering 1893 World's Columbian Exposition, officials assigned 100 explorers to fan across the world to visit remote tribal...

Processions of dead fish, old bathtubs and assorted rock collections may momentarily stop visitors in their tracks as they enter the Field Museum through its new east entrance in coming...

When he did his serious cogitating while composing newspaper columns at home, legendary newsman Mike Royko sometimes liked to wear a blue baseball cap with a plush toy armadillo sewn...

Clint the chimp, whose scientific stardom was assured when researchers announced last week that they had mapped out the chimpanzee genome using his blood sample, is a resident of Chicago....

As a newspaper copy editor, Allan Gray had the uncommon ability to use a disarmingly sweet sense of humor to avoid raising the hackles of reporters while rewriting and improving...

Whether marine mammals and fishes are being fed and cared for at New Orleans' Aquarium of the Americas remains a mystery after officials evacuated keepers late last week over concern...