Acid Rain Interactive site from the EPA on acid rain 
Extreme Weather Online resources that discuss common, and uncommon, weather phenomena and what causes them
JetStream-An Online School for Weather Weather and weather safety information arranged by topic
Kids Storm Facts, pictures, & graphics about tornadoes, lightning, hurricanes, and storm chasing.
NOAA- Weather & Atmosphere Education resources on weather & atmoshpere from the National Oceanic and Atmoshperic Administration
Library of Congress Everyday Mysteries- Meterology & Climatology Archived questions & answers on weather and climate
Student's Guide to Global Climate Change Site provide clear, accurate information about the causes and effects of climate change—as well as the steps we can all take to help solve the problem.
Weather Watch Interactive site that allows students to track clouds in the sky, experiment with weather tools, explore climate conditions, & predict weather
Web Weather Learn what makes weather wet and wild, do cool activities, and become hot at forecasting the weather