http://www.chinadaily.com.cn/china/http://www.noaa.gov/media-release/study-finds-fossil-fuel-methane-emissions-greater-than-previously-estimated http://www.noaa.gov/media-release/study-finds-fossil-fuel-methane-emissions-greater-than-previously-estimated 30 2017 Corporate Responsibility Report | Environment 24.5 million square feet of space around the globe.