Human population Growth
Human population has grown rapidly during the past three centuries. By the year 2000, the world population has reached 6 billion, and it is doubling about every forty-one year. About 92 million more people are added to the world each year, making us now the most numerous vertebrate species on earth. There is good reason to fear that this population explosion, unless checked immediately, will bring disaster of an unknown scale.
CMP Bio World 