In addition to her climbing, Tabei worked on ecological concerns; in 2000, she completed postgraduate studies at Kyushu University focusing on the environmental degradation of Everest caused by the waste left behind by climbing groups. Tabei was also the director of the Himalayan Adventure Trust of Japan, an organization working at a global level to preserve mountain environments. One of the trust's projects was to build an incinerator to burn climbers' rubbish. She also led and participated in clean-up climbs in Japan and the Himalayas alongside her husband and children.