In a speech that could have easily been all about himself -- and how terribly long he's waited to win the highly coveted Academy Award -- Leonardo DiCaprio chose instead to be incredibly selfless when accepting the most prestigious accolade of his career on Sunday (Feb. 28).

First, he thanks the tireless cast and crew that made "The Revenant" possible, giving special attention to Tom Hardy. "Tom, your fierce talent on screen can only be surpassed by your friendship off screen," DiCaprio says.

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After thanking the directors, producers, his entire team, Leo then segues to a much more heavy topic.

"Making 'The Revenant' was about man's connection to the natural world. The world that we collectively felt in 2015 as the hottest year in recorded history," DiCaprio says. "Climate change is real. It is happening right now. It is the most urgent threat facing our entire species."

He urges the audience to stop procrastinating on the issue of global warming and instead support policy makers who speak for humanity and the indigenous people of the world.

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DiCaprio wraps up his speech with gratitude and another call to action. "I thank you all for this amazing award tonight. Let us not take this planet for granted. I do not take tonight for granted. Thank you so very much."

The speech fit well in an show full of dialogue about race, gender identity, sexual abuse and more. The 88th annual Academy Awards were progressive, to say the least.

Posted by:Lindsay MacDonald

Lindsay MacDonald is a Los Angeles based entertainment reporter with an affinity for CW superheroes. She graduated from Pepperdine University with a major in Media Studies and a borderline unhealthy obsession with TV in 2012. She would much rather spend the day binge-watching ‘The Flash’ or sorting ‘Game of Thrones’ characters into Hogwarts houses than venturing outdoors. TV words to live by: “Never ignore coincidence. Unless, of course, you’re busy. In which case, always ignore coincidence.”