The state’s Science and Technology Fair opens tomorrow in Ames and boasts the biggest-ever number of entries. Middle and high school students from across Iowa are bringing their contraptions, inventions and in-depth research to the Iowa State University campus — 620 students this year, up from 550 last year.

Some of the more unusual projects include a study of how music effects the ability to recall information you’ve already learned, or how temperature might have an impact on the gender of leopard gecko eggs in an incubator. The students are competing for $75,000 in awards, scholarships and trips.

High school projects are on display at I.S.U.’s Scheman Building and middle schoolers are at Hilton Coliseum through Saturday.

Radio Iowa