Urbanization
Cities in transition, slums, street children, urban waste management, and disaster management are just some of the urbanization topics addressed on the World Bank Group's website.  Various statistics about global urbanization are also provided.

EnviroLink
A wide range of links to websites relating to agriculture, air quality, transportation, urban issues, water quality, human health, wildlife, forests, environmental ethics, population, sustainable living, etc.

Health and the Global Environment
The Harvard Medical School's Centre for Health and the Global Environment's goal is to help people understand the human health consequences of global environmental change.

National Geographic: Nature and Conservation
Data and photo-journeys of a variety of habitants around the world illustrate various environmental challenges and conservation efforts.  Also provided is info and data about endangered and threatened animals and birds.

Greenpeace
You can find the environmental issues, projects and protests of the well-known Greenpeace Organization, which promotes the awareness of environmental issues around the world, on this website.

Down to Earth
Down to Earth is a science & environment online magazine which addresses especially the environmental problems of developing countries.

World Population Clock
This website works in the future, plotting projected world populations for each month of the coming 18 months, as well as providing other world population data.