There are two types of people in this world: Those who appreciate puns, and those who do not. Actually there’s a third type of person: The person who laughs uncontrollably at said pun, talks about the pun relentlessly, then texts you the pun again later along with alternate puns. That person is me.
This guide is brought to you by Atlas Obscura, and is dedicated to this question: If aliens ever do make contact with the earth... Where will they park?
Over at Atlas Obscura, the editors have gathered together an incredible list of the longest-running scientific experiments in history. But we were most intrigued by two mechanical experiments that started during the nineteenth century and never stopped.