CORVALLIS, Ore. - Engineers ruled the day Friday at Oregon State University.
From race cars to solar power generators to robots, it was all at the Oregon State Engineering Expo.
It had more than 150 student-built projects, more than 30 of them focused on green energy.
Robot exhibits took center stage at the student organized "Robo-Palooza."
Some of the other displays included a driving simulator with a video screen dashboard and a technology that uses solar energy to power a refrigeration system for developing countries.
Enrollment in the OSU Engineering program this year is up to 4,900 undergraduate students and 900 graduate students.