Leonardo DiCaprio Speech at Oscars

At last, Leonardo Wilhelm DiCaprio has won his first Academy Award for Best Actor in The Revenant. In his Oscar speech, he thanked everyone who helped him on the way and took the time to talk about climate change.

After five Oscar nominations, Leonardo DiCaprio finally walked off the stage Sunday night with the coveted gold trophy.

DiCaprio used his acceptance speech to highlight an issue close to his heart -- global warming.

"Making 'The Revenant' was about man's relationship to the natural world...climate change is real," he said. "It is happening right now. It is the most urgent threat facing our entire species and we need to work collectively together and stop procrastinating."

The actor concluded his speech by saying, "I do not take this night for granted."

"I am so grateful to the Academy for their recognition of this film. Making 'The Revenant' was one of the most rewarding and collaborative experiences of my life," he said in a statement. "None of this would have been possible without Alejandro's talent, vision and determination. Our dedicated crew also deserves to share in this moment. Together, they have created a truly unique cinematic experience. Congratulations to all of my fellow nominees this season. Thank you to the Academy."