Learn simple ways to make your home eco-friendly at a free workshop tonight at the Welles Park field house in Ravenswood. Keynote speakers will be Kirk Fox of Helios Green Realty and Bradley Leibov of Terra Firma; representatives from the Chicago departments of buildings, streets and sanitation, and environment will address concerns in their fields and answer questions.

Welles Park is located at 2333 W. Sunnyside; the workshop will take place from 6 to 8 PM in the basement. For more information, call 773-784-0400.