As Caleb Kilian unloaded a few offerings during his Aug. 17 relief appearance with the Iowa Cubs, the right-handed pitcher occasionally turned around to catch a glimpse of the Principal Park radar gun ...

August is the best time of the year to take a dip in Lake Michigan, when its waters hover in the balmy upper 60s. Experts say so, and Chicago’s crowded beaches offer proof. But an invisible hazard can ...