popcorn lung What Is Popcorn Lung?
"Popcorn lung" is the nickname for bronchiolitis obliterans. That's a condition that damages your lungs' smallest airways and makes you cough and feel short of breath. It's sometimes caused by breathing in a chemical used to flavor microwave popcorn.
Iron Curtain Iron Curtain - Wikipedia
The Iron Curtain was the name for the boundary dividing Europe into two separate areas from the end of World War II in 1945 until the end of the Cold War in 1991. The term symbolizes the efforts by the Soviet Union to block itself and its satellite states from open contact with the West and its allied states. On the east side of the Iron Curtain were the countries that were connected to or influenced by the Soviet Union, while on the west side were the countries that were allied to the United States or nominally neutral.
Topographic map - Wikipedia
In modern mapping, a topographic map is a type of map characterized by large-scale detail and quantitative representation of relief, usually using contour lines, but historically using a variety of methods. Traditional definitions require a topographic map to show both natural and man-made features.
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