Sections of Humboldt Park are closed Monday while the search continues for the elusive gator, which is at least 4 feet long. 

Dozens of people lined a wall overlooking the Humboldt Park Lagoon on Friday waiting for a glimpse of an elusive alligator that continues to evade authorities’ efforts to capture it.

Two sea otter pups rescued recently off the coast of California have a new home in Chicago where they are now “thriving,” according to the aquarium.

Environmental nonprofit Openlands created a new online tool to help Chicago-area residents easily identify ways to explore the outdoors in and around the city. 

As the search for the Humboldt Park Lagoon alligator continues, learn more about these fear-inducing creatures – and why they shouldn’t be brought home as a pet.

New research by University of Chicago scientists shows that despite the positive intentions of conservationists who promote captive breeding for monarchs, the practice may not be producing the desired effect.

Chicago police investigators have cracked the case: A 4- to 5-foot alligator is living in a lagoon at one of the city’s most popular parks.

From rare blind salamanders to adorable red wolf pups, here’s our guide to the newest and most unique animals to visit in and around Chicago. 

This massive Chicago aquarium was the world’s largest when it opened to the public in 1930. Today it holds 5 million gallons of water and features a dazzling array of creatures. Learn more fun facts about the Shedd.

The response by animal care specialists from Shedd and other institutions comes amid reports of an abnormally large number of sick adult California sea lions and malnourished pups. 

The disease known as sudden oak death has killed large numbers of oak trees and native plant species in California, Oregon and Europe. The pathogen behind it has now been identified in Illinois.

If you want to see wildflowers in and around Chicago, photographer Mike MacDonald will tell you where to go – and when – for the most glorious blooms.

From hiking to kayaking and fishing to stargazing, here are 10 activities to try this summer in the good ol’ Land of Lincoln. 

Pollinating animals account for an estimated one out of every three bites of food humans eat. “Bees & Beyond” explains how the process works, traces its evolutionary history and demonstrates its impact on our daily lives.

The University of Chicago paleontologist takes us behind some of the most recent science stories making headlines.

Salmon produced by AquaBounty are the first genetically modified animals approved for human consumption in the U.S. The company hasn’t sold any fish in the U.S. yet, but it says its salmon may first turn up in places like restaurants or university cafeterias.