William Mullen

Lincoln Park Zoo on Tuesday lost Yiet Yang, an elderly snow leopard and stately dowager of its lion house, when severe weakness from chronic renal failure and increasing lameness in...

The Museum of Science and Industry, a sprawling Chicago institution fashioned from the delight of an 8-year-old boy, celebrates its 75th birthday Thursday as America's oldest museum devoted to science...

Like the great elder statesman that he is, one of the two oldest male zoo chimpanzees in North America spent time affably greeting old friends and other visitors during a...

When pianist Garrick Ohlsson sits down at Ravinia on Monday night to interpret the melodic lyricism of Russian composers Sergei Rachmaninoff and Alexander Scriabin, it will be a continuation of...

Late one sunny afternoon in April, Kyle M. Cudworth, director of Yerkes Observatory complex, opened up the door leading into the main observatory. Shuffling behind Cudworth, 86-year-old Rolf Riekher, a...

Homeowners who are less than fanatical or even a little lazy about tending their lawns can take comfort from a quietly engaging exhibit at the Peggy Notebaert Nature Museum that...

In what some wags on the staff have dubbed a "scrub the tub" project, the Shedd Aquarium on Sept. 2 will close its Oceanarium section for nine months so it...

Talk about timely. Workers a couple of weeks ago were busily putting up the Field Museum's new temporary exhibit, "Nature Unleashed: Inside Natural Disasters," when a killer cyclone hit the...

Rightly famous for more than a century of archeological excavations in the Middle East, Europe, Asia and Latin America, the University of Chicago lately has been working just around the...

Rightly famous for more than a century of archeological excavations in the Middle East, Europe, Asia and Latin America, the University of Chicago lately has been working just around the...