If you’ve ever wondered what bioluminescence is or how it works, be sure to see “Glow: Living Lights” Jan. 26-May 27. “Glow” is the only traveling exhibition to explore the poorly understood, totally delightful phenomenon that makes fireflies light up and causes plankton to shine. “Glow” will be preceded by “Rainforest Adventure” Oct. 6-Jan. 6, a multisensory experience that shows children the challenges facing the unique environments. (Wilmington, 658-9111, delmnh.org)