As winter weather arrives, Chicagoans can seek refuge from the cold at 113 public buildings designated as warming centers. 

The computer models used to simulate what heat-trapping gases will do to global temperatures have been pretty spot-on in their predictions, a new study found.

The city’s annual winter overnight parking ban goes into effect early Sunday and continues through April 1, 2020. Here’s what you need to know.

In 2003, the Illinois Environmental Protection Agency had 1,265 employees. By 2018, that number had fallen to 639, according to a new report that a former IEPA director describes as “both a wake-up call and call to action.”

A storm dumping heavy snow buried highways in Colorado and Wyoming Tuesday. Blizzard and wintry weather warnings extended into the Great Lakes states with the storm expected to bring high winds and snow to Michigan, Minnesota and Wisconsin.

Dan Hooper spends his time contemplating the biggest mystery of all: how the universe came to be. He joins us to discuss his book, “At the Edge of Time: Exploring the Mysteries of our Universe’s First Seconds.”

Can old dogs teach us new tricks? Scientists are looking for 10,000 pets for the largest-ever study of aging in canines. They hope to shed light on human longevity too.

Sport fish have declined significantly in portions of the Upper Mississippi River infested with Asian carp, adding evidence to fears about the invader’s threat to native species, according to a new study.

An arctic air mass that brought snow and ice to an area stretching from the Rocky Mountains to northern New England on Monday was poised to give way to record-breaking cold temperatures.

Whether it’s used comically or in connection with serious topics, a new internet meme may be underscoring deeper generational divides. 

While it’s still technically fall for another six weeks, you wouldn’t know it by looking outside. WGN meteorologist Demetrius Ivory tells us what’s ahead.

Air from Siberia — yes, Siberia — is heading toward a huge chunk of the United States and it could set record-low temperatures from Texas to New England.

If you woke up Thursday to a weird text that seemed totally out of place, you aren’t alone. A mysterious wave of missives swept America’s phones overnight, delivering largely unintelligible messages from friends, family and the occasional ex.

Secretary of State Mike Pompeo on Monday touted America’s carbon pollution cuts and called the Paris deal an “unfair economic burden” to the U.S. economy.

In a world in which scientific literacy is often lacking, the online platform Zooniverse.org is doing what it can to encourage “people-powered research.”

A 67-acre Southeast Side site served as a dumping ground for Republic Steel for nearly 30 years. Inspection records show the property is contaminated with lead, cyanide, mercury and other potentially harmful pollutants.