Environmental Science © 03

Unit 4: People in the Global Ecosystem

Gaia Hypothesis
This site is a review of James Lovelock's second book on the Gaia Hypothesis, entitled The Ages of Gaia. The review explains the hypothesis and how people originally reacted to it.

World POPClock
What is the estimated population of the world at this moment? The International Programs Center of the U.S. Bureau of the Census will calculate it for you the moment you click on this link. It will also tell you how much the population is expected to increase in the next 12 months. For more detailed demographic data and projected estimates for the year 2050, visit National Population Projections.

Food and Agriculture Organization of the United Nations
This Web site discusses the latest news in agriculture and world food supply, covering droughts, famine, nutrition, and sustainable development issues.

Unit Project 4: Mapping Land Use Patterns

NASA Earth Observatory
Visit NASA's Earth Observatory, where you can monitor regional and global changes on our planet almost as they happen. Here you can explore with NASA scientists the causes and effects of climatic and environmental change through the use of real satellite data.