Dozens of mallards have been found dead over the past month in multiple locations along the Chicago River, marking what one expert says is the largest occurrence of birds dying in the river in decades.

A discovery by Chicago scientists could lead to new understanding about the largest explosions in outer space. 

Pet owners should not panic, local health officials say, but take precautions after a rabid kitten was found in Carroll County.

As more people flock to the backyard poultry trend, the number of salmonella infections are likely to increase, says Illinois Department of Public Health veterinarian Dr. Connie Austin.

About a dozen different species were under close watch during the event as scientists looked for any changes in behavior. 

The last time a total solar eclipse spanned the continental United States from coast to coast was 99 years ago. Thousands joined in the Adler Planetarium’s celestial celebration to mark the occasion.

Animal behavior experts noticed the biggest change in one particular species during Monday’s eclipse: humans. 

Adler Planetarium astrophysicist Lucianne Walkowicz joins us from the eclipse epicenter in Carbondale. 

Over the course of civilization, eclipses have been met with fear and superstition. How humans have reacted to—and explained—eclipses throughout history.

Videos of the eclipse from Chicago’s Adler Planetarium and multiple spots across the U.S. from NASA, plus safety tips, Chicago watch parties and more.

Like scientists across the country, Lincoln Park Zoo’s animal experts will spend Monday’s solar eclipse carefully observing the zoo’s residents for changes in behavior.

What can happen if you look at the sun for too long, even if it’s partially or almost fully blocked? We speak to an ophthalmologist about how to safely watch the eclipse.

Participating in the eclipse is a way for “people to demonstrate that they want to understand the world scientifically,” DePaul sociologist Roberta Garner says. 

What did you see during the historic event? Add your images to our stellar online gallery.

Join us online for live coverage from Chicago’s Adler Planetarium starting at 11:40 a.m. Heading outside? Here are 12 places in and around Chicago where you can celebrate the eclipse. 

Jumping into ocean waters teeming with sharks doesn’t sound like much fun, but for researchers working on shark conservation, it’s a way to gather important and sometimes surprising information. Meet Steve Kessel, the Shedd Aquarium’s new director of marine research.