The community is invited to celebrate the season at the 30th annual Tree of Lights event at Emerson Hospital on Monday, December 3 at 4:30 p.m. in the Cheney Room at the main hospital, 133 Old Road to Nine Acre Corner, Concord. The large evergreen tree outside of the main entrance will be lit to honor loved ones who have made a difference in people’s lives. Refreshments will be served. Funds raised will support pediatric care at Emerson Hospital. More information is at emersonhospital.org/treeoflights or by calling 978-287-3019.