The fact remains that the 1990s will see the greatest increase in human numbers of any decade in history. (religion-online.org)
If that happens, isn't the result an eventual expansion of human numbers and the human imprint? (dotearth.blogs.nytimes.com)
Soon the increasing human numbers led to the perception that the production of more food was necessary to feed more people. (dotearth.blogs.nytimes.com)