When to see a doctor. See a doctor if you or a loved one has memory problems or other dementia symptoms. Some treatable medical conditions can cause dementia symptoms, so it's important to determine the underlying cause.
A brief history of tobacco. (CNN) -- Tobacco was first used by the peoples of the pre-Columbian Americas. Native Americans apparently cultivated the plant and smoked it in pipes for medicinal and ceremonial purposes.
The History of Cotton Production The origins of cotton production and use go back to ancient times. The first evidence of cotton use was found in India and Pakistan, and dates from about 6,000 B.C. Scientists believe that cotton was first cultivated in the Indus delta. The species used in ancient South Asia were Gossypium herbaceum and Gossypium arboretum which originated in India and Africa.