Cellophane is a thin, transparent sheet or tube of regenerated cellulose, which is the chief constituent of the cell walls of plants. It is used in packaging, as a membrane for dialysis, and can be moisture-proofed. Invented in 1908, cellophane is made by dissolving cellulose alkali, aging it, then regenerating it by forcing it through a slit into a dilute acid solution where it precipitates. Cellophane sales have dwindled because of the presence of what pollutant in its production process? Discuss
Source: The Free Dictionary
The Pulitzer Prizes—prestigious awards presented annually by Columbia University for achievements in American journalism, literature, and music—were created by journalist and publisher Joseph Pulitzer, whose will funded the establishment of Columbia’s school of journalism as well as the prizes. Ironically, Columbia had rejected donation offers from Pulitzer during his lifetime because, as one of the originators of yellow journalism, he was regarded as unscrupulous. What do prizewinners receive? 
June 4 is a national holiday in the Kingdom of 
Wieland was a German chemist who received the Nobel Prize in Chemistry in 1927 for determining the molecular structure of bile acids, which are produced by the liver. His work provided insight into the mechanism by which bile acids aid in the resorption of food in the intestines and led to the establishment of the close relationship between cholesterol and the bile acids. How did Wieland help students who were persecuted under the Nuremberg Laws of Nazi Germany? 
Clogs are shoes or sandals that are made entirely of wood or have wooden soles and leather uppers. They are associated with the Netherlands and Sweden, where they are considered part of the national dress. In England, clogs were traditionally made of alder and were commonly worn by all classes throughout the 18th and 19th centuries. The Lancashire cotton mill workers habitually wore clogs to avoid slipping on the wet floors in the cotton mills. How are clogs used in some styles of dance? 
The first spacewalk by an American astronaut was conducted by Edward White during NASA’s Gemini IV mission, which was itself the first multi-day space flight undertaken by the US. Assisted and photographed by fellow astronaut James McDivitt and tethered to the spacecraft for safety, White floated in space for 22 minutes. His spacewalk occurred just months after Russian cosmonaut Alexey Leonov executed the first ever extravehicular activity. How did White describe his reentry of the craft? 
On June 3, 1886, the country of Uganda’s first Christian converts were executed in the town of Namugongo. Then known as 
Olds was a pioneer of the American automobile industry and the namesake of the Oldsmobile and Reo car brands. After developing an internal combustion engine and incorporating it into a car, he opened the Olds Gasoline Engine Works. In 1899, he moved to Detroit, formed the Olds Motor Works, and designed and produced the popular Oldsmobile. With its low price and stylish curved dashboard, it was the first car to be produced in quantity. When was the Oldsmobile brand discontinued?