Leo DiCaprio is probably one of Hollywood’s most enviable bachelors, but he’s also, and more importantly, one of its biggest activists. The self-proclaimed environmentalist almost exclusively uses his platform on social media to promote the causes he believes in. The producer behind Virunga, a documentary about preserving the last of the world’s mountain gorillas, and The 11th Hour, a doc about global deforestation and mass species extinction, DiCaprio pushes his LD Foundation daily. Named after himself, his foundation works to protect the world’s ecosystems from destruction and preserve the lives of its inhabitants.