The 18,000-acre restoration site continues to evolve, as this home of the former Joliet Arsenal gradually returns to its native prairie state. 

Across the United States and Canada, pollen season is starting 20 days earlier and pollen loads are 21% higher since 1990 and a huge chunk of that is because of global warming, a new study found in Monday’s journal the Proceedings of the National Academies of Sciences.

The Chicago area saw dangerously cold weather over the weekend, and the week ahead doesn’t appear to offer much relief. But it takes more than a cold snap to bring the city to a standstill.

An ancient sand ridge in the Calumet region became a well-worn route used by enslaved people seeking freedom.

Early detection of the coronavirus is crucial for reducing its spread, even as vaccinations ramp up. Now, researchers have created a DIY smell and taste challenge – and all you need is your morning cup of joe.

Winter has arrived with a vengeance. The next 48 hours will bring a one-two punch of snow and plunging temperatures.

After getting walloped by two big snowstorms, the area is now bracing for bitter cold later this week. We asked Argonne National Laboratory climate scientist Scott Collis what to expect, and what’s driving the arctic chill.

It’s Groundhog Day. Will it be six more weeks of winter or an early spring?

An Amur tiger that underwent hip-replacement surgery only to dislodge the orthopedic implant within hours has been operated on again, officials at a suburban Chicago zoo said Monday. 

After years of work, pedestrians and cyclists can now stay on the lakefront trail as it crosses the Chicago River – though the full Navy Pier flyover isn’t finished just yet.

Parts of the Chicago area notched more than a foot of snow over the weekend. It won’t have much chance to melt, with a blast of arctic air heading our way toward the end of the week.

Interest in houseplants has grown during the pandemic and is helping plant parents new and old thrive during a difficult year. We visit the Plant Salon in Noble Square for a look.

For the second time in a week, Chicago is digging out after a massive snowfall.

City officials sought to reassure Chicagoans on Saturday they were prepared for a major winter storm to hit the city, which could dump between 5 inches and 9 inches of heavy, wet snow through Sunday.

There are quirky details to be found in bark, twigs and buds that can turn a walk in the woods or around the block into a game of “name that tree.”

The snow is likely to hit late Saturday afternoon and intensify rapidly, with accumulations of more than six inches possible, according to the National Weather Service.