An annual Radon Awareness Act Day Garage Sale is this Friday and Saturday, Sept. 1-2, from 7 a.m. to 2 p.m. each day at 618 Evansville Avenue in Waterloo. All proceeds from the sale go to Citizens for Radioactive Radon Reduction, a group with the goal of spreading awareness about the dangers of living and breathing high levels of radon gas. Learn more at citizensforradioactiveradonreduction.org.