Luke Cheseldine of Brunswick High School discusses his presentation with Arojit Mitra of the Jackson Laboratory Saturday, March 23, at the Maine State Science Fair at Bowdoin College in Brunswick. (Jim Creighton / For The Forecaster)

More than 300 Maine high school students shared their original science and engineering projects at the 73rd annual Maine State Science Fair, sponsored by The Reach Center at Maine Mathematics & Science Alliance and The Jackson Laboratory. (Jim Creighton / For The Forecaster)