The royal family has always encouraged him He is an actor who fights for the critical environmental issues He uses his social networking sites like Twitter to encourage his followers to take climate actions The founder of World Wildlife Fund in 1960s He established The Leonardo DiCaprio Foundation He chooses a sustainable lifestyle by making environmentally conscious choices. He has asked to initiate climate actions to save the planet. He is a legendary filmmaker and broadcaster, The Duke of Sussex is one of the great environment campaigners He has used film as a medium to raise awareness among people One of the most outspoken environmentalists in Hollywood He serves as a very influential role model of environmental conservation.