CK-12 Foundation
Ck 12: Life Science: Human Population
[Free Registration/Login may be required to access all resource tools.] How quickly is the human population growing? If we look at worldwide human population growth from 10,000 BCE through to today, our growth looks like exponential...
PBS
Pbs Learning Media: Primary Source Set: The Yellow Fever Epidemic of 1878
This collection uses primary sources to explore the Yellow Fever Epidemic of 1878.