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Dr. Andrew Casper, Shedd Aquarium's new director of freshwater research (Courtesy © Shedd Aquarium)

A new team led by biologist Andrew Casper will expand Shedd Aquarium’s research of animals that live in local waterways—and how to protect them.

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Conservation groups say the federal government needs to spend more to save monarchs, the beloved black-and-orange insects whose population has dropped in recent decades.

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Monarch butterfly populations have dropped by more than 80 percent over the past two decades. A bill approved this week aims to boost the monarch’s recovery by protecting milkweed, a plant that serves as the butterfly’s only source of food. 

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(Courtesy of Clive Stockil)

Meet Clive Stockil, a conservationist being honored in Chicago who is helping Zimbabwe’s rhinos bounce back from the threat of extinction.

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How a Chicago community organization cultivates the scientific and cultural aspects of monarch butterflies.

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Mayor Rahm Emanuel is leading a huge delegation in Israel on Monday evening. He tells us why.

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(Dmitry Korotkov / PETA)

As part of PETA’s eye-catching “Lettuce Ladies” campaign, South Elgin native Mysti Lee travels the globe promoting animal rights. 

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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.