The Arctic Tern, which is a small bird, can fly a round trip from the Arctic to the Antarctic and back. This can be as long as twenty thousand miles per year. This is the longest migration for a bird.

The reason the soft drink Dr Pepper is called that is because the inventor Wade Morrison named it after Dr. Charles Pepper who had given him his first job.

Airports that are at higher altitudes require a longer airstrip due to lower air density.

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