Carolyn Jons, 14, recently was named runner-up in the Discovery Education 3M Young Scientist Challenge.
Jons created a storage bag that prevents mold by absorbing oxygen. A 3M scientist served as Jons' mentor as she developed her product.
Jons is a freshman at Eden Prairie High School.
As the runner-up, , according to the Star Tribune.
A student from New Hampshire won the $25,000 grand prize, according to the Star Tribune.