What is Causing this Sound? Aliens?

The Humming Sound: Unexplained Phenomenon

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Delmar Mena, Writer

So what causes these other variations of the humming sound? Are aliens a possibility? Definitely. The sounds are heard loudest outside and during the night. After several years, people are still not able to find the source of the sound. The sound has also negatively affected the lives of people who hear this sound but it’s unknown as to why. Although some reports of the humming sounds could be explained as sounds made by mechanical devices and animal calls, this most likely is not the answer as this is not a single phenomenon. It could be later proved to be the popular belief that it is caused by aliens.