Short answers, pulled from the story.
Producer Laurie David attended a town hall meeting in New York City on the 27th of May 2004 and decided to document Al Gore's efforts. She met with producer Lawrence Bender and director Davis Guggenheim to adapt the presentation into a film.
The film opened in New York City and Los Angeles on the 24th of May 2006. It grossed an average of $91,447 per theater on Memorial Day weekend which set a record for documentary films playing on only four screens at the time.
An Inconvenient Truth won two Academy Awards at the 79th ceremony including Best Documentary Feature and Best Original Song for Melissa Etheridge's I Need to Wake Up. The film also received the Nobel Peace Prize in 2007 alongside the Intergovernmental Panel on Climate Change.
High Court Justice Michael Burton ruled on the 10th of October 2007 that the film contained nine scientific errors. He stated these errors must be explained before showing the film to school children but concluded that Gore's presentation was broadly accurate despite the errors.
Al Gore founded The Climate Reality Project in 2006 which trained one thousand activists to give his presentation in their communities. The group now has three thousand five hundred presenters worldwide.