American Prairie Foundation, National Geographic preview American Serengeti tonight at REI

Tonight the American Prairie Foundation presents a free preview screening of American Serengeti at 7 p.m. at the Denver Flagship REI store, with APF representatives on hand to discuss the project.The new film from National Geographic documents the creation of the American Prairie Reserve on more than 3 million acres in northeastern Montana and the partnership between APF, the World Wildlife Fund, the Conservation Fund, and Montana Fish, Wildlife & Parks to acquire and manage the land to create the reserve.

The documentary premiers on the National Geographic Channel on Thursday as part of the network's Earth Day coverage.

Register for the free screening at (96 spots available).