Other
U.s. Environmental Protection Agency: Smog City 2
An interactive air pollution simulator that allows students to control the smog in an imaginary city by adjusting several environmental factors.
TeachEngineering
Teach Engineering: How to Make Yeast Cells Thrive
Students set up and run the experiments they designed in the lesson Population Growth in Yeasts, using simple yeast-molasses cultures in test tubes. Population growth is indicated by the amount of respiration occurring in the cultures,...
National Institutes of Health
Niehs: Breast Cancer
This is an article by the National Institute of Environmental Health Sciences. It discusses the discovery of two breast cancer genes, and some environmental and other factors that may affect whether someone gets breast cancer.