Simulating the evolution of the cosmos. A local physicist is here to talk about using supercomputers to delve into the mysteries of the universe.

Cook County Board President Toni Preckwinkle is calling for the resignation of Cook County State's Attorney Anita Alvarez in the wake of the shooting death of Laquan McDonald. Carol Marin talks with Preckwinkle about the crisis surrounding the Chicago Police Department and the sweeping probe of police patterns and practices by the DOJ.

The Laquan McDonald shooting has brought the police union under fire. Is there a culture of cover-up among cops? Dean Angelo, president of the Fraternal Order of Police, joins us.

Another missed kick by Robbie Gold, another missed opportunity for the Bears. James "Big Cat" Williams is here to break down the Bears eighth loss of the season. 

State-approved medical marijuana has arrived in Chicago’s Andersonville neighborhood. We get a look inside the first—and so far the only—dispensary to open in the city. 

Test your skills against our latest Chicago Tonight Puzzle. Don’t forget to submit your answer by 10 a.m. Monday for the chance to win a special prize package (and bragging rights!).

See incredible images of combat zones around the world with a woman whose war photographs caught the attention of Steven Spielberg. Meet photojournalist Lynsey Addario.

The Chicago Police Department is the subject of national scrutiny following the shooting deaths of two African-American males at the hands of on-duty police officers. Mayor Rahm Emanuel joins us for a one-on-one discussion about police reform and calls for his resignation.

The loss drops the Bears to 5-7 and makes their playoff hopes statistically improbable – though not completely impossible – with four games remaining in the regular season. Join us for analysis with James "Big Cat" Williams.

In 2001, a WTTW11 crew visited Schubas Tavern to interview rising singer-songwriter Neko Case – and to record a performance with her band, Neko Case & Her Boyfriends. In anticipation of Case's upcoming appearance at the MCA, watch exclusive, never-before-seen footage from that shoot.