This site does as its title suggests--provides statistics in real time. It includes current data on population, food and hunger, technology, information, and other topics relevant to seven revolutions.

This New York Times article describes the implications of achieving a global population of seven billion people and examines the possibilities for population growth and related issues into the future.

This site represents the land area necessary if the population of the world were as dense as various cities.

Click on the water conflict map to see some of Al Jazeera's coverage of an issue which could define 21st century strife After droughts ravaged his parents' farmland, Sixteen-year-old Hassain and his two-year-old sister Sareye became some of the newest refugees forced from home by water scarcity.

This factsheet at water.org provides an excellent overview of water issues

The Pew Global Attitudes Project is a series of worldwide public opinion surveys that encompasses a broad array of subjects ranging from people's assessments of their own lives to their views about the current state of the world and important issues of the day. More than 200,000 interviews in 57 countries have been conducted as part of the project's work.