According to Wired.co.uk, the source of the Earth's 'humming' noise may have been found:
A strange bell-like ring emitted by the Earth has left oceanographers confused for decades, but a new study may have found an explanation.
The low-frequency sound, which is inaudible to human ears but can be detected by seismic instruments, has frustrated scientists since the 90s. Theories suggested everything from electromagnetic radiation to earthquakes and secret military operations might be to blame. Although the sound is almost certainly too faint for humans to hear, some people claim to be plagued by a "tinnitus"-like noise -- including many residents of Bristol in the 70s, who said the sound caused headaches and even nosebleeds.
Link to research paper.[abstract only]
(Score: 5, Informative) by sigma on Tuesday April 21 2015, @06:42AM
'Cos it's not in the summary: Ocean waves.
(Score: 2) by davester666 on Tuesday April 21 2015, @07:32AM
Man, I never knew that when people told me "Don't make waves", they were telling me to stop humming.
(Score: 0) by Anonymous Coward on Tuesday April 21 2015, @07:48AM
So oceanographers confused by waves?! One would think this would be a new area of study!
(Score: 1, Interesting) by Anonymous Coward on Tuesday April 21 2015, @10:41AM
Looks like they want you to pay to read the rest of it. Or at least subscribe to something. Why is Soylentnews supporting these types of articles.
(Score: 0) by Anonymous Coward on Tuesday April 21 2015, @08:18PM
Feel free to post a link to the free version of the article.
By the way, I do have access to the article and I'm pretty sure you wouldn't understand it if you could read it. That is why there are people who write articles like the one in Wired.
(Score: 2) by danomac on Tuesday April 21 2015, @06:48PM
(Score: 2) by Jaruzel on Wednesday April 22 2015, @08:22AM
Deliberately didn't mention the Ocean Waves in the summary, coz, y'know it's a summary, and as good Soylentils we all should be following the links to the source and reading TFA.
I bet you are the sort of guy that delights in telling people the endings of films they haven't seen as well.... :)
This is my opinion, there are many others, but this one is mine.