Upcoming

Moon Science. For ages 3+, including their accompanying parent/caregiver, explore the properties of the moon and the moon phases with hands-on activities and experiments. gwinnettpl.org/ calendar/moon-science-ages-3

■ 4:30 p.m. Jan. 10. Free. Lilburn Branch, 4817 Church St., Lilburn

■ 10:30 a.m. Jan. 15. Free. Dacula Branch, 265 Dacula Road, Dacula

■ 3:30 p.m. Jan. 16. Free. Five Forks Branch, 2780 Five Forks Trickum Road, Lawrenceville

■ 10:30 a.m. Jan.17. Free. Snellville Branch, 2740 Lenora Church Road, Snellville

■ 4 p.m. Jan. 23. Free. Centerville Branch, 3025 Bethany Church Road, Snellville

Social Security Pre-retirement Program. Social Security providesfinancial benefits, information and tools for you and your family. Learn tips from a Social Security Public Affairs Specialist to get the facts and ask questions. gwinnettpl.org/calendar/social-security-pre-retirement-program

■ 11 a.m. Jan. 12. Free. Suwanee Branch, 361 Main St., Suwanee

■ 10:30 a.m. Jan. 18. Free. Collins Hill Branch, 455 Camp Perrin Road, Lawrenceville

Radon Awareness: The Silent Danger in Homes. Radon is a radioactive gas that can be found in the soil under homes. Exposure to radon may cause lung cancer, and testing homes is the best way to know if radon is present. Join UGA Extension Radon Educator Derek Cooper to learn more about radon and how to protect your family. Radon Testing Kits will be available for purchase by cash or check only. gwinnettpl. org/calendar/radon-awarenessthe-silent-danger-in-homes

■ 6:30 p.m. Jan. 16. Free. Hamilton Mill Branch, 3690 Braselton Highway, Dacula

■ 6:30 p.m. Jan. 23. Free. Collins Hill Branch, 455 Camp Perrin Road, Lawrenceville