Global Warming: A Glossary of Terms A glossary of words related to global warming.		National Scenic Trails A chart listing U.S. National Scenic Trails.
The Uncertainties of Global Warming Describes the uncertainties surrounding global warming with respect to climate.		Extreme Geographical Points of the United States A chart listing the extreme geographical points of the United States.
The Effects of Global Warming on Sea Level Describes the effect of global warming on sea level.		Rivers of the United States A list of rivers, 350 miles or longer, in the United States.
Global Warming: Greenhouse Effect Describes and defines the greenhouse effect.		Highest Mountain Peaks in the United States A chart listing the highest mountain peaks in the United States.
Photosynthesis Help students to understand the process of photosynthesis.		Highest, Lowest, and Mean Elevations in the United States, by State A chart of the highest, lowest, and mean elevations in the United States, by state.
Global Warming: We CAN Make a Difference! Describes what each of us can do to reduce the amount of greenhouse gases that we put into the...		North American Continental Divide A brief explanation of the North American continental divide.
National Monuments in the U.S. A chart listing U.S. National Monuments.		World Heritage Sites in the United States A list of World Heritage sites in the United States.
Geographical Highs, Lows, and Boundaries of the U.S. A chart listing geographical highs, lows, and boundaries of the U.S.		Eclipses of the Sun and Moon, 2005 - 2012 An article listing the dates and places of eclipses occurring between 2005 and 2012.
Global Warming: So, What's the Big Deal? Describes how small changes over a long period of time can lead to big problems, in terms of...		The Global Environment Outlook: An Overview A list of continents and the major environmental issues in those areas.
National Park System of the United States A chart listing U.S. National Parks.		Major Air Pollutants A list of pollutants, where they come from, and what their effects are.