Disneynature's debut movie Earth will be released in theaters on April 22, 2009 (Earth Day), and the studio is celebrating by planting a tree for every ticket sold in the first week of release.

"'EARTH' is a spectacular film from the world's most acclaimed nature filmmakers, and we couldn't think of a better way to launch the new Disneynature banner, and to celebrate the spirit of the film and Earth Day at the same time," said Dick Cook, chairman of The Walt Disney Studios. "The film gives moviegoers an entertaining and unprecedented view of our planet, with some of the most astonishing imagery and exciting natural drama ever presented on the big screen."

According to their press release, the trees will be planted in the Brazilian Atlantic Forest, reportedly considered to be one of the most endangered in the world.

Narrated by James Earl Jones, “EARTH” tells the remarkable story of three animal families and their amazing journeys across the planet we call home. “EARTH” combines rare action, unimaginable scale and impossible locations by capturing the most intimate moments of our planet’s wildest and most elusive creatures. This movie is being done by the same people that created the excellent documentary series "Planet Earth" for the BBC, so I'm very much looking forward to seeing what they do with a feature-length movie!

Tickets for the movie are already on sale for select theaters, so you don't have to wait until opening day to get the house of Mouse to plant a tree in your name. We have more information, including videos, photos, and related links available on the Information Page for Earth.

Source: Walt Disney Studios Motion Pictures Press Release