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Along Wolf Lake on Chicago’s Southeast Side lies the only Illinois state park within city limits, where visitors can find fishing spots, biking trails – and invasive species.

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(Credit: Charlotte Adelman and Bernard Schwartz, Ohio University Press)

Why native trees and plants not only look good but are better for local wildlife and the environment. A discussion with author Charlotte Adelman.

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(Lincoln Park Zoo)

The young males belong to a highly social zebra species and will eventually share a habitat with the zoo’s giraffes. 

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A first-of-its-kind study shows that giving people a financial incentive to save trees is an effective strategy for fighting climate change.

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(Wisconsin Department of Natural Resources / Dan Nedrelo)

Life as an amphibian is no easy hop through the woods. Why Chicago scientists are measuring levels of cortisol (the stress hormone) in Lake County frogs.

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(Center for Biological Diversity / Lori Lieber and Shawn DiCriscio © 2015)

Lincoln Park Zoo will give away hundreds of condoms this week as part of a nationwide outreach program to draw attention to the link between human population and endangered species.

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An update to our March story about bald eagles returning to Cook County.

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(Brookfield Zoo / Chicago Zoological Society)

The ethical debate over zoos – and whether animals belong in them – has resurfaced over the past year, and now Brookfield Zoo is joining the discussion.

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In the early 1960s, bald eagles were nearly extinct in the lower 48 states. But government protections and conservation measures have had a huge impact on their numbers. “I think it’s an incredible success story,” said biologist Chris Anchor.

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Western pond turtle (Courtesy of Yosemite National Park)

The tale of the Western pond turtle was one of several success stories shared with donors Monday evening at a Shedd Aquarium event focused on conservation efforts nationwide. 

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(© Shedd Aquarium / Sam Cejtin)

Shedd Aquarium researchers are studying queen conch populations in the Bahamas to understand the decline of the popular snail in the Caribbean. 

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Peggy Notebaert Nature Museum's alligator snapping turtle, Patsy McNasty, moved into a bigger tank Jan. 19. (Alex Ruppenthal / Chicago Tonight)

Alligator snapping turtle Patsy McNasty moved into a new 300-gallon tank this week at Chicago's Peggy Notebaert Nature Museum, where visitors attended a “housewarming” event for the 14-pound turtle. 

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An artist’s rendering of Pullman Artspace Lofts, a mixed-use housing development slated for construction in historic Pullman. (PullmanArts)

Plans to build an affordable, mixed-use housing development in historic Pullman are under fire from a small group of community members.

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Damien Mander (Courtesy of the International Anti-Poaching Foundation)

Meet a former elite soldier from Australia who is now using his special set of skills to combat poaching in Africa.

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It was once the vision of the future. Now a major campaign is underway to save the House of Tomorrow from becoming a memory of yesteryear.

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A little brown bat. Photo by Ann Froschauer. (U.S. Fish and Wildlife Service Headquarters / Flickr)

In Chicago and surrounding counties, where reports of nearly 40 cases of rabies-infected bats have made headlines so far this year, the reputation of the small, winged creature seems bleak.