The second installment of WTTW's "10 That Changed America" premiers Tuesday. This time, host Geoffrey Baer looks at 10 American parks that changed how we live and play in our cities.

Chicago Teachers Union President Karen Lewis. Image Credit: CTU

Controversial remarks by Chicago Teachers Union President Karen Lewis surface online. We get reaction to what Lewis had to say about Arne Duncan, among other topics, at a conference in Washington last month.