Google is holding its third annual online Science Fair competition.
Students ages 13 to 18 can submit their research findings about some of the world's most challenging problems, from renewable energy to cancer research.
The theme for this year's competition is "It's your turn to change the world".
The competition offers an outlet for young scientists to test their ideas. Submissions are accepted entirely online.
From Jan. 30 to April 30, students can submit their research projects online in one of 13 different languages.
Google has partnered with National Geographic, CERN, Scientific American and LEGO for the competition.
In June, Google will announce the 15 global finalists who will go Google's headquarters in Mountain View, Calif. A Science in Action Award, sponsored by Scientific American, will go to a project that addresses a social, environmental or health issue.
In 2012, Brittany Wenger, 17, of Lakewood Ranch, Fla., won the grand prize for a computer program that improves doctors' ability to diagnose malignant breast tumors. In 2011, Shree Bose, of Fort Worth, Texas, won first place for her research on ovarian cancer.
In addition to a $50,000 college scholarship, the winner receives a $10,000 grant for their school, a National Geographic Expedition trip to the Galapagos Islands (with a parent or guardian), and a hands-on experience with a Google Science Fair partner organization.