If Higgs boson, stem cells and outer space – among many other scientific topics – keep you intrigued, then Cafe Scientifique is for you. Held once a month at Denver's Wynkoop Brewing Company, each free meeting has a fresh topic and a guest speaker who takes questions from the audience as they swig microbrews and munch on chips and salsa. Come early or stay late for a meal of traditional pub fare in the main restaurant and continue the intellectual discussion. Meetings are held once a month and begin at 6:30pm; visitors are encouraged to arrive early.