The library catalog lists all the books in the North Harris Montgomery Community College District. This is an excellent place not only to get background information, but also to get statistics, history, and current controversial issues on air pollution. The bibliography at the end is an excellent place to find additional sources. Other earlier issues may have some valuable scientific facts as well. Also, try Issues and Controversies on File .
Many articles are available in full text right off the computer.
Other articles may be on the library magazine shelves. There are many articles which compare Houston with Los Angeles in the Houston Chronicle. Plus for the medical aspects. This book compiles a good number of scientific articles on various environmental topics including air pollution. The Internet is a great place to get government information as well as current statistics and living conditions.