Khan Academy
Khan Academy: Polio Epidemiology
An overview of the polio as an epidemic prior to 1900 and how the infectious disease has slowly diminished but for three countries (Nigeria, Afghanistan, and Pakistan).
BusinessSpanish.com
Business spanish.com: Travel Spanish: Before Traveling
This site lists the type of things you would need to know prior to traveling to a Spanish country. It lists general information relating to passports, duty-free items, cash restrictions in certain countries, gifts etc. Print off this...