Illinois is now the 20th state to allow medical marijuana. Gov. Pat Quinn signed House Bill 1 on Thursday, which legalizes the use of marijuana for medical purposes. Paris Schutz has the details.

With a budget shortfall projected at over $300 million, what’s a city budget director to do? Alexandra Holt joins us to discuss her plan of action for the City of Chicago. Read the city's 2013 Annual Financial Analysis.

A photo of earth from 1 billion miles away, what the Curiosity Rover has discovered after a year on Mars, and a spacecraft that may now be traveling beyond the solar system. Astrophysicist Chris Lintott joins us to explore some of the latest and most amazing stories from outer space. View a slideshow and vote on your favorite photo in the Astronomy Photographer of the Year 2013 Contest.

In the heart of Chicago, shaded by the afternoon shadow of Michigan Avenue skyscrapers, watered by the mist of Buckingham Fountain wafting through the air, is a farm. The surprising site is one of many small, sustainable, organic farms that have been created and are run by Growing Power, an organization that teaches farming and entrepreneurial skills to kids in Cabrini Green, Altgeld Gardens, Roosevelt Square and other places around the city. We take a look inside. Read an interview with Monte Henige, CEO of Tru Fragrance, a fragrance development company that uses ingredients from Growing Power Chicago in their products.

Chicago Shakespeare’s production of The Comedy of Errors began a tour of 18 Chicago parks. We talk with Chicago Shakespeare’s Executive Director Criss Henderson and actress Lanise Antoine Shelley. Learn more about the program and view a map.

Gov. Pat Quinn responds to the lawsuit filed against him by Illinois House Speaker Michael Madigan and Senate President John Cullerton. The two legislative leaders filed suit Tuesday challenging the governor's decision to withhold paychecks from lawmakers until they come up with a pension reform solution. Paris Schutz has the details. Read Quinn's statement.

Could private dollars provide the key to building innovative, efficient infrastructure in Chicago? We chat with the new head of the city's controversial Infrastructure Trust.

Humboldt Park neighbors come together to get gangs off the street corner. Elizabeth Brackett has the story.

Could Chicago be the next Taksim Square? We talk with Rick Perlstein, who wrote about Chicago’s protest culture in The Nation.

Chicago's Department of Streets and Sanitation says that requests for rat control services are down 15 percent this year.

In a Field Museum exhibition, a Chicago photographer teams with a nationally known journalist to document and explore the North Dakota oil boom. Hydraulic fracturing – or fracking – passed the Illinois House legislature, and the controversial drilling practice will soon have implications for the state. We revisit a preview of Fractured: North Dakota's Oil Boom. View a slideshow of images from the exhibit and read a web article.

We revisit a conversation with Curb Your Enthusiasm star Jeff Garlin about his new independent film Dealin’ with Idiots, a youth baseball comedy. Watch the film trailer and a web extra conversation with Garlin.

The CTA says it has saved $10 million this year, but it faces a host of other financial problems and the rollout of the new Ventra fare card system. Will fares go up? Paris Schutz has the latest.