From The Columbus Dispatch: Ohio State University plans to drill 550 feet beneath campus to tap Earth's temperature to heat and cool five residence halls on the Columbus campus. The university will drill 450 geothermal wells in the South Oval and the parking lot next to Hale Hall. The system will regulate the temperatures in Park, Siebert, Smith, Steeb and Stradley halls, as well as two new 11-story buildings that also will have student housing. The five residence halls, built in the 1950s, do not have air conditioning.