Andy Weir, the science-fiction writer of “The Martian” and “Project Hail Mary,” paid $6.8 million in July for a six-bedroom mansion in Winnetka.

Here’s a look back at what happened in the Chicago area on Sept. 3, according to the Tribune’s archives.

More than half of Chicago school board candidates signed a pledge calling for a three-year ban on the use of generative AI in public schools.

Good Good Golf CEO Matt Kendrick and president Joe Flannery have left the company in the wake of an outcry over an advertisement.

Striking Cook County Forest Preserve maintenance, conservation and programming workers reached a deal with management Wednesday.

Chipmaker Nvidia is buying artificial intelligence software platform Hugging Face for $12.93 billion.

This three-bedroom home has two full bathrooms, one half bathroom, a den, floor-to-ceiling windows and Northeast views of the river and the city skyline.

On Sept. 3, 1894, the United States celebrated the first federal Labor Day holiday.