Stories by Erica Gunderson

The latest U.S. Census Bureau reported a dubious distinction for Cook County: the second most-populous U.S. county now leads the nation in population loss with over 10,000 fewer residents in 2015 than just a year before. 

Badgers are known for their elusiveness: the mostly solitary animals travel and forage at night, moving from one place to another very quickly. But wildlife biologists recently got lucky and caught one in northwest Cook County.

Chicago public school teachers will go on a one-day strike this Friday that may or may not be legal. Chicago Public Schools Chief Forrest Claypool joins “Chicago Tonight” to talk about the upcoming one-day teachers strike and what parents should do. 

Watch the March 28, 2016 full episode of "Chicago Tonight."

Hear what viewers had to say about our talk with CTU president Karen Lewis and our web story on a new water treatment plant that uses ultraviolet light to help clean the Chicago River when we read feedback from the "Chicago Tonight" website, and our Facebook and Twitter pages.

How will rank-and-file police officers react to the mayor's unexpected appointment of CPD veteran Eddie Johnson? Two former Chicago Police officers share their perspectives on Emanuel's pick and to aldermen inserting themselves more into the selection process.

In the wake of the attacks in Brussels, the recently appointed Special Agent in Charge for the FBI division in Chicago joins “Chicago Tonight” to discuss the challenges in addressing terrorist threats.

In the Loop, a photographic feast is now being served. To celebrate its 40th anniversary, the Museum of Contemporary Photography combed its archives to find the pictures that best reflect the character of the museum. What they found were dramatic images from the 19th century to the 21st.

In a surprise end-run, Mayor Emanuel shuns the recommendations of his police board and makes it known he wants Eddie Johnson to be police superintendent.

DuPage County is the healthiest in the state, according to a recent comprehensive report comparing counties’ health statewide. Cook County doesn't crack the top 50.

The head of the Chicago History Museum talks about the ups and downs facing museums today, plus his school days with Hillary Clinton  and why he "binge listens" to Studs Terkel.

Mayor Rahm Emanuel joins “Chicago Tonight” for a one-on-one interview with Paris Schutz on Tuesday. What are your questions for the mayor? Share them with us.

Rat complaints are on the rise, according to city data. Find out what Mayor Rahm Emanuel and Ald. Carlos Ramirez-Rosa (35th Ward) are doing to address the issue.

Joel Weisman and his guests discuss the vote by the Chicago Teachers Union's House of Delegates to authorize a one-day strike and other top stories of the week.

Chicago Teachers Union President Karen Lewis said the newly approved April 1 walkout is not about contract negotiations with CPS. “If it were a contract strike, it would be illegal,” Lewis said to Eddie Arruza. “This is an unfair labor practice strike.”

Watch the March 24, 2016 full episode of "Chicago Tonight."

The Chicago Teachers Union says the vote for a one-day strike passed overwhelmingly. But a vocal minority still opposes it.

Meet the local man who's a certified Lego professional with a brand new exhibit at the Museum of Science and Industry.

Last week's primary election saw several firsts, including same-day voter registration and record-breaking early voting. Cook County Clerk David Orr discusses what it means for the future.

A small nature reserve at a tiny point on the southern coast of Peru is playing a big role in protecting endangered marine and bird species. Learn how the Chicago Zoological Society has been working with the community to engage locals in the conservation effort.

Hunt for Easter Eggs, get your fill of March Madness, see stand-up from Trevor Noah and more this Easter weekend in and around Chicago.

Ann Goldstein, the former director of Amsterdam's Stedelijk Museum, will take over the position previously held by James Rondeau, who is now the museum's president.

The Illinois Supreme Court dealt Mayor Rahm Emanuel a major setback Thursday in his efforts of saving two of the city’s four public employee pension funds, which city officials say could go broke within the next 15 years.

Hear what viewers had to say about the Nabisco plant layoffs and the upcoming one-day Chicago Teacher's Union strike when we read feedback from the "Chicago Tonight" website, and our Facebook and Twitter pages.

In an era in which the Internet and social media have completely disrupted long-established business models for the entire print industry, do newspapers anywhere have a long-term future?

The Chicago school board is served with a walkout notice by the teachers union on the same day the board sues the Illinois State Charter School Commission.