Rehling earned a law degree from the
University of Copenhagen in 1975 and became a clerk for the
Ministry of the Environment. He then taught administrative law from the University of Copenhagen. In 1984, he became director of the
Danish Society for Nature Conservation and increased the society's popularity until his term ended in 1996. From 1987 to 1996, he was vice-president of the European Secretariat of the Committee on the Environment. He then became an editor and later a writer at
Dagbladet Information. In
1973, Rehling unsuccessfully ran for a seat in the
Folketing as a member of the
Danish Social Liberal Party. David Rehling died on 2 June 2021 at the age of 72. ==References==