Watch the April 20, 2016 full episode of "Chicago Tonight."

One size apparently does not fit all Big Mac lovers. Crain’s Chicago Business managing editor Ann Dwyer weighs in on this story and more business news.

Tuesday’s primary in New York proved that Hillary Clinton and Donald Trump are the front-runners in their respective parties, with both candidates winning big in a state that was crucial to each campaign. What does it mean for the other candidates moving forward?

Chicago women had a professional baseball league of their own in the 1940s and '50s. Geoffrey Baer has the story of the National Girls Baseball League.

As a guitarist, singer and songwriter, Toronzo Cannon drives the sound of Chicago blues from the city to blues clubs and festivals around the world.

From climate change to leaky roofs, disasters big and small can often be avoided if the warning signs are recognized and acted upon in time. And while it can be easy to see the crisis approaching, it's not always easy to know when or how to react.

The legendary Chicago news anchor who started his career at WMAQ-Channel 5 in August of 1981 will sign off one last time from WLS-Channel 7 on May 25.

Delays in rape kit testing and strained law enforcement resources nationwide mean that victims of sexual assault may face long waits for their attackers to face prosecution. 

A bill that's advancing in Springfield would move Illinois from a flat income tax of 3.75 percent to a graduated system, where higher earners pay higher rates. Does the bill stand a chance of becoming law?

The Naismith Memorial Basketball Hall of Famer is under investigation following a mass exodus of players and allegations of player mistreatment.

Shedd Aquarium staff are watching a 28-year-old female Pacific white-sided dolphin and her newborn calf around the clock during what they call "a very crucial time."

Watch the April 19, 2016 full episode of "Chicago Tonight."

Less than half of the plant life found in the Chicago region is native to the area. As the Morton Arboretum's tree improvement specialist, it's Joe Rothleutner's job to make sure those native plants are protected.

Geoffrey Baer visits 10 American towns in the final installment of the "10 That Changed America" series, airing at 8 p.m. Tuesday night on WTTW.