Audience: Middle and High School students By: Anand Mehta In 1962, John F. Kennedy, former President of the United States, gave one of...

Audience: High School students When asked to picture a cruise ship, most people imagine the large and energy-consuming floating cities,...

In the mid-1800s, an explorer named Charles Darwin sailed on a ship called the H.M.S Beagle to embark on a five-year journey around the...