In the spring of 2012, when Glen MacPherson, lecturer at UBC, was living near the coastal village of Sechelt, along the Sunshine Coast in British Columbia, he began hearing a humming sound, which he thought were float planes. The noise usually started later at night, between 10 and 11 p.m. His first clue that something unusual was happening came with the realization that the sound didn't fade away, like plane noises typically do. And the slightest ambient noise caused it to momentarily stop. He was the only person in the house who could hear it; his family said they didn't know what he was talking about. Naturally, Glen assumed something in the house was the culprit, and he searched for the source in vain. He even ended up cutting the power to the entire house. The sound got louder. While he couldn't hear the sound outdoors, he could still hear it in his car at night with the windows closed and the ignition off. After driving a few mile out of nowhere, he stopped the car and the