The Discovery Museum (177 Main Street, Acton) will offer free admission on summer Fridays, 4:30PM-8PM. (Treehouse and Discovery Woods close at dusk.) Reservations are required and can be made 10 days in advance. Donations of non-perishable food will be gratefully received for Open Table and the Acton Food Pantry.

The Discovery Museum will also host drop-in sessions of the amazing Caterpillar Lab on July 5-6, 9AM-Noon and 1PM-4PM.