WWF: over 45 years, the population of animals in the world has decreased by 58%
Over four and a half decades since 1970, the population of mammals, birds, fish, amphibians and reptiles in the world decreased by 58%. According to the Air Force, such data are contained in the report of the World Wildlife Fund. Together with the Zoological Society of London, the Wildlife Fund calculates the index, which reflects the number of various species of animals. According to forecasts, by 2020 the index will decrease by 67%.