WorldNomads.com is holding it's 2010 Travel Documentary Scholarship to the Amazon competition through August 1st. Submit a 3-minute documentary and you could get to work alongside documentary producer Trent O'Donnell as he makes a documentary on Sustainable Tourism. You'll also get to create your own short - 3 minutes! - video documentary.
According to the website: Anyone can apply - this is open to film students, lovers of film or anyone who's trying to build a career in documentary making! Find rules and more information here.