A mask mandate for all pre-K through 12 Illinois schools. A local study on the effects of COVID-19 misinformation on social media. A new ban on evictions. And a classic Chicago building on the move.

With classes for students in pre-K through 12th grade set to resume across Illinois in the coming weeks, Gov. J.B. Pritzker on Wednesday announced a mask mandate for all students and staff at public and private schools.

If you thought your last move was a hassle, CTA has got you beat: The agency just relocated an entire building.

Nearly 600 million birds are killed annually in North America due to collisions with buildings. A new Illinois law mandates bird-friendly design for state buildings.

The American College of Obstetricians and Gynecologists and the Society for Maternal-Fetal Medicine said vaccinations in tens of thousands of pregnant women over the past several months have shown the shots are safe and effective during pregnancy.

The industrial history of Chicago’s Southeast Side has drawn criticism for its impact on the environment and residents’ health. Some say it also makes it difficult for residents to get around by foot or bike. How one South Deering program is working to change that.

Each year, 22 million pounds of plastic finds its way into the Great Lakes – the source of potable water for more than 30 million Americans. We take a look at what can be done to limit plastic pollution.

COVID-19 infections are again rising in Chicago following Lollapalooza, which drew hundreds of thousands of people to Grant Park last weekend. But the city’s top doctor says the four-day event is not to blame.

Is a vaccine passport in the works for Chicago? A call for pregnant people to get the vaccine. The lights are flickering on a renewable energy bill. And “Hamilton” is back in Chicago — sort of.

Miguel Cervantes joins us in conversation ahead of a performance this week at The Metropolitan Club and the reopening of “Hamilton” on Broadway next month.

With possibly just a few weeks left before Exelon shutters a nuclear reactor in Byron, feuding and politically powerful interests have failed to reach a deal that would keep the plant open and otherwise move Illinois toward its renewable energy goals.

Many unknowns about COVID-19 remain more than a year into the pandemic, among them the mysterious loss of taste and smell. But new research offers insight into the cause of this common symptom.

Former Gov. Rod Blagojevich, Illinois’ only governor to be impeached and removed from office, was back at the Dirksen federal courthouse on Monday, but this time it was on his own volition — rather than as a defendant in criminal proceedings.