Why Are Airplane Black Boxes Orange?
Airplane black boxes are painted bright orange so investigators can find them quickly after a crash. International and national regulations…
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What Were Milk Carton Kids and Did the Campaign Work?
Milk carton kids were missing children whose photos and brief details were printed on milk cartons in the 1980s to…
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How Many Calories Does Playing Chess Burn?
The answer to how many calories does playing chess burn is about 70 to 100 kilocalories per hour for an…
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What Is TFA from CFC Replacements and Is It Dangerous?
TFA from CFC replacements is trifluoroacetic acid formed when replacement refrigerants and some inhaled anesthetics break down in the atmosphere….
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Is Super Sentai Ending?
Super Sentai is not officially confirmed to be ending permanently. The current anniversary season is concluding, but neither Toei Company…
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How Thick Is the Milky Way (and What Defines the Galactic Plane?)
The Milky Way does not have a single fixed height, but near the Sun most disk stars lie within about…
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Helicopter Bolt Cost: Why One Bolt Costs $8,000
How certification, traceability, testing, and low-volume production make some helicopter fasteners cost thousands of dollars, and why you cannot substitute…
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What Is Recombinant Insulin and How Is It Made?
Recombinant insulin is human insulin made by genetically engineered microbes rather than by extracting the hormone from animal pancreases. It…
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Is Dr Pepper Cola or Root Beer?
Dr Pepper is neither a cola nor a root beer. It is a pepper-type soft drink with a proprietary blend…
