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Dec 22, 2025
How Artificial Insemination is Saving Mexican Wolf Populations
Nearly 30 years ago, scientists began collecting semen samples from Mexican wolves. On Sunday, Brookfield Zoo artificially inseminated one wolf as part of an effort to boost the genetic health of the endangered species. 
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How Artificial Insemination is Saving Mexican Wolf Populations
Dec 22, 2025
Elon Musk’s SpaceX: A New Era of Commercial Space Exploration?
Could Elon Musk’s successful launch and landing of his Falcon Heavy rocket usher in a new era of commercial exploration—and exploitation—of space? This story and more from the world of science with Neil Shubin.
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Elon Musk’s SpaceX: A New Era of Commercial Space Exploration?
Dec 22, 2025
Willis Tower Receives EPA Certification for Energy Efficiency
Chicago’s tallest building is being recognized for its standing atop another category: energy efficiency.
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Willis Tower Receives EPA Certification for Energy Efficiency
Dec 22, 2025
Illinois Solar Jobs Dropped in 2017, But Outlook Remains Bright
The number of solar jobs in Illinois – and the U.S. as a whole – decreased last year, but experts are still optimistic about the industry’s future.
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Illinois Solar Jobs Dropped in 2017, But Outlook Remains Bright
Dec 22, 2025
Up to 10 Inches of Snow Could Blanket Chicago
Friday’s snowfall could be heavy at times but will gradually end later this morning after blanketing the area with another 2-4 inches, according to the National Weather Service. Here’s what you need to know.
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Up to 10 Inches of Snow Could Blanket Chicago
Dec 22, 2025
Chicago’s Biggest Buildings Cut Emissions by 20 Percent, City Says
A new city report on energy use by buildings shows progress toward reducing carbon emissions that contribute to global warming.
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Chicago’s Biggest Buildings Cut Emissions by 20 Percent, City Says
Dec 22, 2025
Forgotten, But Not Gone: Sea Slug Brains Show Traces of Lost Memories
Two Chicago-area researchers have uncovered what they think is the first piece of physical evidence showing that forgotten memories could still live on inside our brains.
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Forgotten, But Not Gone: Sea Slug Brains Show Traces of Lost Memories
Dec 22, 2025
Orangutan Undergoes Emergency Appendectomy at Brookfield Zoo
Ben, a 40-year-old orangutan at Brookfield Zoo, underwent an emergency appendectomy last month after veterinary staff discovered a ruptured appendix. 
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Orangutan Undergoes Emergency Appendectomy at Brookfield Zoo
Dec 22, 2025
Adler’s Popular ‘What is a Planet?’ Exhibit Returns This Week
Starting Friday, planetarium visitors will have another chance to explore the ever-evolving way humans view the universe.   
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Adler’s Popular ‘What is a Planet?’ Exhibit Returns This Week
Dec 22, 2025
Photos: Animals at Brookfield Zoo Get Valentine’s Treats
Date or no date, single or taken, animals at Brookfield Zoo experienced Valentine’s Day with the best kind of gift: food.
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Photos: Animals at Brookfield Zoo Get Valentine’s Treats
Dec 22, 2025
Combined Rain and Melting Snow Poses Flooding Risk in Chicago
A forecast of heavy rain, unseasonably warm temperatures and melting snow presents a flooding risk for Chicago. MWRD offers tips to prevent basement backups and reduce strain on local water systems. 
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Combined Rain and Melting Snow Poses Flooding Risk in Chicago
Dec 22, 2025
Emanuel, Mayors Send Letter to EPA Opposing Repeal of Clean Power Plan
Mayor Rahm Emanuel joined 230-plus mayors Tuesday in formally opposing the Trump administration’s proposed repeal of the Clean Power Plan, which aims to reduce carbon emissions that contribute to climate change.
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Emanuel, Mayors Send Letter to EPA Opposing Repeal of Clean Power Plan
Dec 22, 2025
Heavy Rain Causes Flooding, Sewer Backups in Chicago Area
Melting snow and more than 2 inches of rain have caused flooding and sewer backups in and around Chicago.
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Heavy Rain Causes Flooding, Sewer Backups in Chicago Area
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