Vudu offers FREE rentals of “Before The Flood” in HD.
Vudu Rental Details: Rentals are available for 30 days while unwatched. Once you press “play,” a 24-hour viewing period is initiated. You may watch the movie as many times as you wish during this 24-hour period. The rental will expire at the end of the 24-hour period or the end of the 30 days, whichever comes first.
Free rental promotion expires: Unknown.