Underwater Archaeology

Underwater archaeology, a branch of maritime archaeology, is the study of past human life, behaviors, and cultures using the physical remains found in bodies of water or buried beneath water-logged sediment. Researchers in this field generally examine the sites of shipwrecks, submerged airplanes, structures created by humans in water bodies, and places where people once lived that have since been flooded or covered by water. How do divers record their findings underwater? Discuss

Source: The Free Dictionary

Ziggurats

A ziggurat is a pyramidal structure built in receding tiers upon a rectangular, oval, or square platform with a shrine at its summit. Access to the shrine is provided by a series of ramps located on one side of the temple or by a continuous spiral ramp. These temples—the earliest examples of which date to the end of the third millennium BCE—were commonly erected by the Sumerians, Babylonians, and Assyrians. What is the significance of the multicolored brick facings found on many ziggurats? Discuss

Source: The Free Dictionary

The Sword of Gou Jian

In 1965, archeologists excavating ancient tombs in Hubei, China, discovered a bronze sword sheathed tightly in a wooden scabbard. The weapon had been in a wet, underground tomb for over 2,000 years, yet the blade remained untarnished and sharp. Scientists, amazed by the sword’s resilience, tested it to determine its chemical composition and found it to be an alloy of six metals. What does the “text of birds and worms” inscribed on the blade tell historians about the artifact? Discuss

Source: The Free Dictionary

Astrobiology

Astrobiology, also called exobiology, combines aspects of astronomy, biology, and geology in an interdisciplinary study of life in space. According to astrobiologists, the search for extraterrestrial life throughout the universe is governed by 6 basic parameters that determine whether an environment can support life: temperature, pressure, salinity, acidity, water availability, and oxygen content. Which 3 planetary bodies, located within our solar system, are best equipped to sustain life? Discuss

Source: The Free Dictionary

Weightless Wonders

“Vomit Comet” is a nickname for any airplane that briefly provides passengers with a nearly weightless environment by following a parabolic vertical flight path. The aircraft mimics the trajectory of an object in free-fall and therefore does not exert any g-force on its contents. As a result, passengers have zero apparent weight relative to the aircraft. According to the director of the Reduced Gravity Research Program, what percentage of passengers on zero-g flights becomes violently ill? Discuss

Source: The Free Dictionary

Tay al-Ard

Tay al-Ard, literally translated to mean “folding up of the earth,” is the name for thaumaturgical teleportation in the mystical form of Islamic religious and philosophical tradition. Some explain the concept as traversing the earth without moving, while others explain that it is the earth which is displaced under the traveler’s feet. Tay al-Ard is a common concept in Sunni, Shia, and Sufi belief, though each group interprets it slightly differently. What Quranic verses allude to such travel? Discuss

Source: The Free Dictionary

The Daguerreotype

The daguerreotype, an early form of photograph, was invented by Louis Daguerre in the early 19th c. He collaborated with J. Nicéphore Niepce, who created the first permanent photograph, but completed the design alone following his partner’s sudden death. A daguerreotype, produced on a silver-plated copper sheet, produces a mirror image photograph of the exposed scene. Daguerre’s process made portrait photography possible for the first time. How did the French government describe the invention? Discuss

Source: The Free Dictionary

Honor Among Thieves: The Pirate Code

In the second half of the 17th century, buccaneers began operating under a set of rules that eventually became known as Articles of Agreement, or the Pirate’s Code. While the rules generally varied from one captain to another, most contained provisions for discipline, specifications for each crewmate’s share of treasure, and rules regarding compensation for injury. According to records of the code, what was the punishment for striking another man while in the service of Captain John Phillips? Discuss

Source: The Free Dictionary

Karaoke

Karaoke, a form of entertainment in which amateur performers sing songs using pre-recorded music, was popularized by Japanese musician Daisuke Inoue in the 1970s. Inoue invented a coin-operated music player in 1971 after fans requested recordings of his performances—they wanted to sing along with the music on a company retreat. He never patented the karaoke technology and thus forfeited a potential fortune. What song has been banned at many bars in the Philippines for causing too many fights? Discuss

Source: The Free Dictionary

The Flu

Influenza, commonly known as “flu,” is a highly contagious viral disease that is characterized by fever, respiratory symptoms, fatigue, and muscle pain. The word influenza stems from the Latin root influentia, meaning “influence of the stars,” because before people knew that organisms cause disease, they thought that the stars influenced the spread of influenza. Between 1918 and 1919, how many people were killed in a worldwide lethal flu pandemic? Discuss

Source: The Free Dictionary