Ernst Ludwig Krause also known under the pen-name Carus Sterne (22 November 1839 in Zielenzig, – 24 August 1903 in Eberswalde) was a German biologist.Initially a student of pharmacy, he later studied natural sciences at the University of Berlin. After graduation, he devoted himself to independent scientific research. He was a prominent and successful champion of Darwinism in Germany. He also maintained an extensive correspondence with Germany's most outspoken popular Darwinist, Ernst Haeckel. Source: Wikipedia (en)