geoengineering
noun [ U ] uk/ˌdʒiː.əʊ.en.dʒɪˈnɪə.rɪŋ/ us/ˌdʒiː.oʊ.en.dʒɪˈnɪr.ɪŋ/
地球工程学
the study and activity of finding ways to change the earth's atmosphere in order to reduce global warming (= the gradual increase in world temperatures)
One geoengineering project is tree planting. 地球工程学的项目之一是种树。