An icebreaker is a ship specially designed to force its way through ice-covered waters. Whether powered by gas turbines, diesel-electric power, or nuclear energy, icebreakers are expensive to build, very expensive to run, and uncomfortable to travel in on the open sea because they roll easily. Nevertheless, icebreakers are needed to keep trade routes open where there exist seasonal or permanent ice conditions. What three features must a ship possess in order to be considered an icebreaker? Discuss
Source: The Free Dictionary
Tagore was a Bengali poet, philosopher, artist, writer, and composer whose works reshaped Bengali literature and music in the late 19th and early 20th centuries. His writings, which often exhibit rhythmic lyricism, colloquial language, and philosophical contemplation, received worldwide acclaim, and he became Asia’s first Nobel laureate in 1913, when he received the Nobel Prize for Literature. Knighted by the British government in 1915, Tagore resigned the honor 4 years later in protest of what? 
A star cluster is a group of related stars usually held together by gravity. Globular clusters are densely packed groups of hundreds of thousands of very old stars. Open clusters are smaller, scattered groups of younger stars. Until recently, astronomers wrestled with a great cosmological mystery: according to theories of stellar evolution, it appeared that some globular clusters were actually older than the universe itself. How was this paradox resolved? 
In 1866, a small, white pebble, which turned out to be a 21-carat diamond, was found on the banks of the Orange River in South Africa. When a second, larger diamond was found in 1871, a diamond rush brought miners to the area by the thousands. Eventually, five big holes were dug, and the largest, known as the “Big Hole,” yielded three tons of diamonds before it was closed in 1914. What company, founded during the rush, is now responsible for about 40 percent of the world’s diamond production? 
Between May and December 1946, a number of mysterious rocket-shaped objects, termed “Ghost Rockets,” were spotted in several European countries. These reports are considered by many ufologists to be the first widespread post-World War II sightings of unidentified flying objects, or UFOs. Though many of the objects were attributed to meteors, especially those seen during the annual Perseid meteor shower, most were not. What led investigators to conclude that the objects were not merely meteors? 
Michel was a German woman who died in 1976 while undergoing exorcism treatments for demonic possession. She began suffering from seizures and depression when she was 16, the symptoms of which were not eased by conventional medical treatment. Convinced her condition was the result of demonic possession, Michel began a series of hour-long exorcism sessions that lasted nearly a year and ended with her death. Why were her parents and the priests who performed the exorcisms convicted of manslaughter? 
Zzyzx is a settlement in San Bernardino County, California. The name was given to the area in 1944 by American radio evangelist Curtis Howe Springer, who claimed it was the last word in the English language. He established the Zzyzx Mineral Springs and Health Spa on the plot, which was actually federal land that he had not received permission to use. In 1974, he was arrested for misusing the land, and the government seized the property. Who oversees the area today? 
In 1859, French physicist Gaston Planté invented the lead acid battery, the world’s first rechargeable electric battery and the forerunner of the modern automobile battery. His early model consisted of two sheets of coiled lead soaked in sulfuric acid, but he soon revised this design, and just a year later, he presented a nine-cell version to the Academy of Sciences. What mechanical device did Planté invent as part of his investigation into the differences between static and dynamic electricity? 
Colloidal silver is a mixture of silver particles and water that has antimicrobial properties. Formerly used on external wounds and burns to prevent infection, colloidal silver is cited by some alternative-health practitioners as a beneficial nutritional supplement and a powerful antibiotic that is relatively safe for human consumption. However, most members of the mainstream medical community warn users that it can lead to argyria, a rare but permanent condition that turns the skin what color? 
Famed American architect Frank Lloyd Wright led a turbulent life rife with personal tragedy as well as several failed marriages. In 1909, Wright left his first wife and eloped to Europe with Mamah Cheney, who was also married at the time. When the pair returned to the US, Wright began building a new home, called Taliesin. In August 1914, while Wright was away, one of his workers set fire to Taliesin and murdered 7 people with an axe, including Cheney and her 2 children. Who survived the attack?