Richard William Heinberg is an American journalist and educator who has written extensively on energy, economic, and ecological issues, including oil depletion. He is the author of 14 books, and presently serves as the senior fellow at the Post Carbon Institute.

The 11th Hour is a 2007 documentary film on the state of the natural environment created, produced, co-written and narrated by Leonardo DiCaprio. It was directed by Leila Conners Petersen and Nadia Conners and financed by Adam Lewis and Pierre André Senizergues, and distributed by Warner Independent Pictures.