NEW YORK: Leonardo DiCaprio feels optimistic that the debate over climate change has begun to wane and world leaders are finally starting to take it more seriously.

“The scientific community has been screaming out loud. Ninety-nine percent of the scientific community is in agreement that man is contributing to (climate change),” DiCaprio told The Associated Press on the red carpet for his new film, “The Revenant” on Wednesday.

“The argument is over. Anyone that doesn’t believe that climate change is happening doesn’t believe in science,” said DiCaprio, who has remained an active player for the issue.