Seventy percent of the air pollution in China is due to car exhaust. Under the umbrella of environmental chemistry, learners extensively explore air pollution. From the makeup of our atmosphere to sources of major air pollutants, classes...

Learn what soils are and why they are important. Discusses soil profiles, types of soils, soil conservation, soil ecosystems, and soil formation.

Riparian soils occur along the edges of a lake, stream or river. Pictures and diagrams in this fact sheet explain the importance of and composition of riparian soils.