The Heinz Sielmann Foundation (de:Heinz Sielmann Stiftung) is a charitable organization based in Duderstadt, Germany. The organization has the official motto "Diversity is our nature" and it introduces people, especially children and young people, to a positive approach towards the nature through its programs involving interpersonal experiences. It also spreads public awareness about nature and its need for protection and carries out the preservation of the Heinz Sielmann archive of nature photographies/films. From Wikipedia
