The skin of what type of animal is used to treat burns?
Fish skin, usually from Atlantic cod or Nile tilapia, has anti-inflammatory and anti-bacterial properties that support healing of some wounds including burns and diabetic foot ulcers.
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- What was the first stethoscope like?
“The first stethoscope was a wooden tube for one ear.”
Reference: Encyclopaedia Britannica
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Who invented the stethoscope?
French doctor René Laennec invented the stethoscope in 1816 after rolling up paper to listen to a patient's heart.
How did the Louisiana Purchase change the size of the US?
In 1803 the US bought the Louisiana Territory from France for about $15 million. The deal roughly doubled the size of the country.