美宇航局和谷歌擬聯手監測碳排放

In this publicly distributed handout image provided by NASA an artist's conception of the Orbiting Carbon Observatory satellite that splashed into the ocean near Antarctica in February 2009 is shown. Even if nations agree to cut greenhouse gas emissions， how will the world know if they are living up to their pledges? The answer may come from both out-er space and

cyberspace.

注：“本文中所涉及到的圖表、注解、公式等內容請以PDF格式閱讀原文”