Sheena Cruickshank’s interest in science began with her brother’s fascination with marine life. As children in Scotland, they explored nearby tide pools and collected sea anemone and other creatures. Realizing that many people don’t have experiences that provide this window into the wonder of science and discovery, public engagement has been a way for her to share her appreciation for science.

A probiotic containing the protective bugs may offer a potential therapy for preventing the disease, researchers say.

At the recent USA Science & Engineering Festival, hands-on science exhibits, stage presentations and informal “ask-the-scientist” sessions were made possible by some 75 volunteers, including 34 non-staff members.