Some web sites attempt to provide moment-to-moment estimates of current world or USA population and growth rates.<ref>http://www.worldometers.info/world-population/</ref><ref>http://www.census.gov/popclock/</ref> Graphs of population projections that have been prepared by the Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat display wide [[uncertainty]] ranges even when projecting population out to 2100.<ref>https://esa.un.org/unpd/wpp/</ref> | Some web sites attempt to provide moment-to-moment estimates of current world or USA population and growth rates.<ref>http://www.worldometers.info/world-population/</ref><ref>http://www.census.gov/popclock/</ref> Graphs of population projections that have been prepared by the Population Division of the Department of Economic and Social Affairs of the United Nations Secretariat display wide [[uncertainty]] ranges even when projecting population out to 2100.<ref>https://esa.un.org/unpd/wpp/</ref> |