OLD LYME — The Phoebe Griffin Noyes Library hosts a two-part series on Light Pollution in the Connecticut River Valley presented by Misha Semenov-Leiva and Alan Sheiness.

Learn the effects of a brightened night sky, as well as natural cycles in aquatic and terrestrial life. Semenov-Leiva will share simple site lighting design changes that can reduce impacts while promoting safety.

• Part I met at the Library on Wednesday, May 3, at 6:30 p.m.
• Part II will meet at Trail 53 Observatory located in Lyme on Wednesday, May 17, at 8 p.m.

Register at this link.