Eugenics (literal meaning: 'good breed') is a scientific field that concerns itself with the improvement and self-direction of the human species. The parallels to Darwin's 'evolution' theory was not accidental, as several prominent members of the Darwin family (including Charles Darwin's son, Major Leonard Darwin) were ardent believers in eugenics and fulfilled leadership positions. The movement was at its height in the first half of the 20th century with little to no widespread opposition. Due to bad publicity because of what happened in Nazi-Germany under their adopted eugenics laws (culminating in the Holocaust), the movement went underground and adopted a new name, 'human genetics'. Furthermore, the field of eugenics split into several sub-social sciences including cybernetics, transhumanism and bio-ethics.