More than 100 middle and high school students displayed their projects at the 37th annual Regional science and Engineering fair at Darton College.
Students studied topics ranging from which brand of battery lasts longest to how to use peanuts to make energy.
"We've got about 150 students for 17 different counties, and about 20 different schools, we take the best projects from the schools, and we have the regional and the best ones from here get to move on to state," said Doug Wyatt, Regional Science Fair Director.
About 25 winners will compete at the state Fair in Athens this April.
Lauren Cameron and Erick Rentz both from Colquitt County High School were Senior Grand winners tonight.
They'll go to Reno, Nevada for the international competition.