San Francisco Chronicle: SAP introduced a corporate sustainability office today and pledged to cut its greenhouse gases in half – to 2000 levels – by 2020. The company, based in Germany with labs in Palo Alto, also dedicated 100 employees throughout the organization to making SAP greener, an effort that includes cutting travel and printing and boosting the use of renewable energy. Peter Graf, an executive vice president, was named the company’s chief sustainability officer, reporting to the SAP …