The primary goal of conservation biology is to address the Earth's loss of its biological diversity. It focuses on advancing the practice of conserving this diversity and preventing further losses.
Conservation biology uses two main methods to achieve the primary goal. One is to evaluate the human impact on biological diversity; the other is to find practical approaches to prevent species extinction.
Conservation biology began in the 1970s and 1980s, when scientists realized that almost every natural system has been damaged by factors such as habitat loss, overharvesting and predators introduced into these environments. Traditionally applied disciplines were not comprehensive enough to address these threats, resulting in the development of this biological field.