10 Unidentified Sounds That Scientists Are Seriously Looking Into

The Trumpet
In 2013, a woman recorded a trumpet-like noise she and some other residents of Terrace, British Columbia heard. Some think the sound might be a hoax; others think it's from electromagnetic waves. moodboard/Thinkstock

In the summer of 2013, a woman in British Columbia began hearing a loud, trumpet-like sound, and one morning she recorded it with her video camera and posted it to YouTube. While some questioned its authenticity, there have been other reports of a similar sound from Texas to Norway.

There are some variations: Sometimes the noise sounds more like the moan of an animal, while other manifestations resemble a low-pitched rumble, a whine or a thumping. Nobody has determined what it is, though University of Saskatchewan physics professor Jean Pierre St. Maurice has hypothesized that the noises may be from electromagnetic waves coming from aurora, natural light displays mostly seen in the Arctic and Antarctic skies [source: Huffington Post].