Centers for Disease Control and Prevention
Youth and Tobacco Use
There are a number of social, emotional, and physiological reasons why teenagers start smoking, and why they continue smoking into adulthood. Help class members understand why smoking begins in youth—and how to protect themselves from...
Curated OER
Etc: Maps Etc: Swamp Lands of the United States, 1911
A map from the 19th Annual Report of the U.S. Geological Survey (1898) showing areas of swamp and marsh lands in the United States at the time, with degrees of swampiness shown in two shadings.