The Illinois Emergency Management Agency warns Southern Illinoisans to be prepared for earthquakes. Just how great is the risk?

A bright meteor streaked across skies in Chicago and the Midwest at about 1:30 a.m. Monday. 

With an expected audience of officials appointed by President Donald Trump, the Heartland Institute hopes to reset U.S. climate policy, which is also the theme for its upcoming International Conference on Climate Change.

Is rhetoric edging us closer to doomsday? Last week, the Doomsday Clock edged 30 seconds closer to midnight, putting the world two and a half symbolic minutes away from global annihilation. 

Siku the polar bear wants a floating stone. Bella the baby guerilla wants carrots. The holiday season has passed, but Chicago zoo animals are still hoping for gifts.

A Smithsonian ornithologist says outdoor cats are devastating bird populations.

Cook County is more than halfway through a multiyear project that aims to make solar energy more affordable for residents.

On Thursday, the Illinois Environmental Council released its Environmental Scorecard, highlighting the top pieces of environmental legislation (and legislators) from 2016. 

The increasing frequency of tornadoes, and a new study on gun violence. Those stories more from the world of science with Rabiah Mayas.

Geoffrey Baer solves the mystery of a viewer’s “vague memory” from the 1940s, revisits an exhibit at the Century of Progress and opens the door to the Evanston History Center.

The decadeslong fight to clean up the Chicago River took a step forward last week with the resolution of two lawsuits targeting phosphorous discharge that has polluted waters from Chicago to the Gulf of Mexico.

Dozens of Chicago activists met last week to plan a defense of environmental policies that appear vulnerable under the administration of President Donald Trump.

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. 

Why are there so many long-eared owls showing up in Chicago this winter? Bird watchers call it an “irruption.”

Chicago will depend on residents to help enforce the city’s updated recycling ordinance – at least initially. The changes, which took effect Jan. 1, mark the first update to the city’s recycling rules in 20 years.

Over the course of its history, the Peggy Notebaert Nature Museum has amassed a collection of about 390,000 animal specimens and artifacts. We get a close look at five of these rarely seen items.