Blanding's turtles, an endangered species in Illinois and a half-dozen other states, are getting a head start on survival at the Peggy Notebaert Nature Museum.

Humans pose the greatest threat to chimpanzees, renowned British primatologist Dr. Jane Goodall said Thursday during an event at the Lincoln Park Zoo.

A plan that aims to allow swimming in Chicago’s waterways in less than 15 years was unveiled Wednesday by the city and partnering nonprofits.

Tomatoes and salad greens that are served in upscale Chicago restaurants are grown in Ogle County, Illinois. We visit the source.

One year in and the city's ban on flimsy, one-use plastic bags is now fully in effect. But is it really reducing pollution or, as some critics charge, is it actually making the problem worse? Our panel examines the ban's impact.

As of Monday, chain stores that are 10,000 square feet or less must comply with the city's plastic bag ban originally enacted a year ago.

Thanks to an experimental program started by the U.S. Fish and Wildlife Service in 2009, a wild population of threatened turtles has been established in northwestern Illinois. Find out how local institutions helped the agency reach its goal.

On the South Side of Chicago some local entrepreneurs are repurposing an old meatpacking plant in an effort to create something very unusual – a way of doing business that creates no trash.

In the mid-1980s, the Lincoln Park Zoo and Brookfield Zoo set up critical captive breeding populations of two bird species native to the Pacific Islands. A new report from the Center for Biological Diversity underscores the impact of such programs.

The Shedd Aquarium has a new CEO in Bridget Coughlin. She joins "Chicago Tonight" to talk about her varied experience and what she anticipates for the future of the beloved aquarium.

This fall, hunters in Illinois will be able to hunt and trap bobcats for the first time in more than four decades. But some state lawmakers are pushing for a ban on trapping the animals and selling their pelts.

The National Bison Legacy Act aims to put the largest land mammal in America on the same level as the bald eagle, the country's national bird and a cultural symbol of independence.

Maku the eastern black rhino is one of less than 1,000 such animals living on Earth due to decades of poaching. Today he turns 30.

A break in the aging pipeline that crosses under the pristine waters of the Straits of Mackinac could be catastrophic for the Great Lakes. Is the old pipeline a threat? Elizabeth Brackett brought us the story in June. We take another look in this encore presentation.

Over the past 10 years, monarch butterfly populations have been declining in North America. Learn simple ways to promote the creature’s habitat in your backyard.

Elizabeth Brackett reports on how the Shedd Aquarium is drastically cutting its energy consumption.