After the meltdown at the nuclear power plant near Chernobyl, Ukraine on April 26, 1986, officials closed off a 19-mile circle around reactor number four. In 2011, this area will be opened to tourists.

Apparently within this zone, there are still a number of hot spots that are dangerous; thus, tourists will be carefully monitored at all times and only allowed to go into the safer areas. However, if you do go visit, be careful not to eat any produce found here since the locally grown food is often radioactively contaminated.

For more about what you would get to see, see this Fox News article about Chernobyl tourism.

At the moment, the birthplace of Beatles' drummer Ringo Starr is set for demolition. The Liverpool City Council has already approved plans to bulldoze the building at 9 Madryn Street in order to make room for a new housing development. However, a Save Madryn Street Campaign caught the eye of housing minister Grant Shapps who has now asked the Liverpool City Council to delay the destruction of the building so that alternative outcomes may be considered.

Ringo Starr lived in this building from his birth until age four. Although English Heritage has decided not to give the property protected status, many Beatles fans believe the building to be culturally important. Do you think the building should be saved?

For more information about the attempts to save Starr's birthplace, please read this Telegraph article.

It had only been five years since Orville and Wilbur Wright made their famous flight at Kitty Hawk. By 1908, the Wright brothers were traveling across the United States and Europe in order to demonstrate their flying machine. Everything went well until that fateful day in September that began with a cheering crowd of 2,000 and ended with pilot Orville Wright severely injured and passenger Lieutenant Thomas Selfridge dead. Read the full story of the very first airplane crash.

The Vietnam War (1959-1975) was the prolonged struggle between nationalist forces attempting to unify the country of Vietnam under a communist government and the United States (with the aid of the South Vietnamese) attempting to prevent the spread of communism. Learn more about this highly controversial war.

For more information about the Vietnam War:

• Timeline of the Vietnam War
• Pictures of the Vietnam War
• Vietnam War Glossary

Muhammad Ali is one of the most famous boxers of all time. His conversion to Islam and draft evasion conviction surrounded him with controversy and even exile from boxing for three years. Despite the hiatus, his quick reflexes and strong punches helped Muhammad Ali become the first person in history to win the heavyweight champion title three times. Learn more about Muhammad Ali, known simply as "The Greatest."

Mata Hari was an exotic dancer and courtesan, killed by the French for espionage during WWI. Who was Mata Hari? Was she really a spy?