Ten years ago Al Gore transformed himself from failed presidential candidate to ecological warrior with the release of his influential film "An Inconvenient Truth."
As a way to mark the anniversary, Vudu is giving away copies free to own for today (May 24) only.
While climate change is now a hot topic, it took films like "An Inconvenient Truth" to popularize the (controversial) idea that humans are having a hugely detrimental effect on the planet we live on.
Whether you believe in climate change or not, with a rating of 93 per cent on Rotten Tomatoes "An Inconvenient Truth" is worth checking out.
Vudu users are able to download the film onto compatible devices or stream it in up to 1080p (HDX) quality.
Update, 3:30 p.m. ET: The movie is also available for free on the iTunes store today only .