In the summer of 2009, Ben Taylor ’10 spearheaded an effort by the Sustainability Office to complete the university’s first comprehensive baseline carbon inventory. 51·çÁ÷’s gross emissions were 6.24 tons per full time student and 7.46 tons per 1,000 square feet of building space. 51·çÁ÷’s highest sources of emissions were found to be on-site combustion of fossil fuels at 36 percent of our total emissions, business-related air travel at 27 percent, electricity at 11 percent, and faculty and staff commuting at 10 percent.