The 41-year-old "Revenant" actor said it was a great honour that a spiritual leader is endorsing a scientific movement, reported People magazine.
""I think he wrote this encyclical, which is one of the most important things in the climate change history, so to speak. Basically, spreading the gospel that we should care about the planet we live in. It's a sin to destroy our planet.
"He's been inspiring and revolutionary to come out and be outspoken about the issue of climate change and endorse the scientific community...The fact that he's come out as this spiritual leader endorsing the scientific movement is unprecedented and was an incredible Honor," DiCaprio said.
