Less than 5% of the Internet is accessible via Google. Collectively called the deep web, most of it can only be reached by carrier pigeon.
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The average human body emits roughly 180 positrons every hour from the decay of potassium 40. These positrons quickly encounter electrons and annihilate into a pair of gamma rays.
Birds aren't real.
Dragons aren't real
Many cultures from around the world independently developed the concept of dragons before making contact with any other civilization.
The reason for that may be because dragons share many features of the creatures that we fear most, based on scientific studies.
It is april fools day in some parts of the world now.