WASHINGTON, DC.- Cristián Samper, a biologist and international leader in the field of conservation biology, announced his resignation from the National Museum of Natural History where he has served as director since 2003. Samper was Acting Secretary of the Smithsonian from March 2007 until July 2008, when he returned to the Museum of Natural History. Samper will continue as director through July. Samper is leaving the Smithsonian to become president and CEO of the Wildlife Conservation Society headquartered in New York City. It has been a privilege to serve at the Smithsonian as director of this great museum, with a team of dedicated professionals and act as a steward of the largest natural history collection in the world, said Samper. As a tropical biologist, I recognize the urgent need to conserve the natural and cultural diversity of this planet. It is my goal to contribute to these vital efforts as head o