A world-renowned nature photographer visits Chicago for the opening of an exhibition of his truly magnificent wildlife pictures at the Peggy Notebaert Nature Museum.

The National Weather Service has issued a winter storm watch Saturday for a storm system that could bring up to 8 inches of snow to the Chicago area.

In research released on Friday, Nobel winning astronomer Adam Riess calculates the cosmos is between 12.5 and 13.0 billion years old - about 1 billion years younger than previous estimates.

Hudson, a 1,000-pound male polar bear at Brookfield Zoo, underwent a historic checkup this week when he received a CT scan and had semen collected, which was used to inseminate two female polar bears. 

With more and more alternatives to cable television, is it time for you to cut the cord?

Tours like Dave Odd’s “Eat the Neighborhood” in Lincoln Park introduce Chicagoans to local plants that are edible or can be used for medicinal purposes. 

By tracking the types, frequency and intensity of frog mating calls, experts hope to gauge the success of conservation efforts in an area commonly referred to as the city’s dumping ground. 

Staff made the decision to euthanize the North American river otter pup after his health declined over the weekend. “This was an enormously hard decision to make,” said Bill Zeigler of the Chicago Zoological Society.

Would you forgo your privacy for more effective technology? Owners of voice-activated home devices may need to start asking themselves that question.

A pair of bills would strip the state of its authority to regulate endangered species that are protected at the federal level but that might require further protections within Illinois.

Staff at the zoo are caring for the pup because his mother was unable to provide him with proper nourishment. His arrival in February marked the zoo’s second successful birth for this once-endangered species.

We get up close and personal with some cold-blooded creatures ahead of the nation’s largest educational reptile show.

A groundbreaking study concludes that human health can be “mostly sustained” for a year in space, a key finding that figures to help NASA with its mission of sending humans to Mars within two decades.

Ever since Einstein’s theory of relativity first predicted them, black holes have captured the imagination of the public and scientists alike. We speak with two local astrophysicists about this scientific breakthrough.

Sometimes the best thing for a forest or prairie is to burn it. We spend a day with a Cook County burn crew.  

Renowned University of Chicago paleontologist Neil Shubin recently returned from an expedition to search for fossils in Antarctica. He tells us about his trip.