Kammala wannan jumla: A watan Yunin 2010, Cameron ya gana da jami'an hukumar kare muhalli don tattauna hanyoyin magance matsalar.
Ruwan mai na Deepwater Horizon ya zubo. An bayar da rahoton cewa ya ba da taimakonsa don taimakawa wajen dakatar da man fetur daga kwarara. Shi memba ne na Majalisar Shawara ta NASA kuma ya yi aiki tare da hukumar sararin samaniya don gina kyamarori don Curiosity rover da aka aika zuwa duniyar Mars. Koyaya, NASA ta ƙaddamar da rover ba tare da fasahar Cameron ba saboda rashin lokaci yayin gwaji. Ya nuna sha'awar wani aiki game da Mars, yana mai cewa "Na kasance mai matukar sha'awar motsi na 'Yan Adam zuwa Mars [...] kuma na yi bincike mai yawa na kaina don labari, ƙaramin shiri, da fim na 3D". Cameron memba ne na Mars Society, kungiyar da ba ta riba ba ce da ke neman mulkin mallaka a duniyar Mars. Cameron ya goyi bayan dan takarar Democrat Hillary Clinton don zaben shugaban kasa na Amurka na 2016.