Oxford College could be getting a $20 million science center, Newborn now has a taxi service and cities are turning their attention to the 2011 SPLOST vote.Newton County’s mayors met Friday morning at the Porterdale City Hall Annex to update changes to their cities and discuss future issues affecting all municipalities.OxfordMayor Jerry Roseberry said Oxford College continues to raise funds for a $20 million science center. Oxford’s Director of Communications Cathy Wooten said the college was still in its capital fundraising campaign but had also begun working on the design with an