A lecture explaining the mysteries of our atmosphere will be the final chance to see the juried exhibition of 130 photographs taken by scientists, meteorologists, and amateur photographers at Boyden Gallery in St. Mary’s College of Maryland’s Montgomery Hall. Charles Adler, associate professor of physics and Steven Muller Distinguished Professor of Science, will talk about “The Atmosphere Exposed” at 2 p.m. Saturday, Oct. 2, at the gallery.

 The popular summer exhibition, sponsored by the Maryland State Arts Council, The Patuxent Partnership, and Wyle, was the centerpiece of a conference and several lectures.