more: Previous studies suggested that waves from both shallow continental shelves and the deep ocean contribute to the Earth’s hum, but new data indicates otherwise. Based on measurements from a seismic observatory called the USArray EarthScope, most of the hum appears to originate from the Pacific coast of North America, with a smaller contribution from the west coast of Europe. Waves from the deep ocean don’t seem to make much hum at all.

The data for this study, published Thursday in Geophysical Research Letters, was gathered from November 2006 to June 2007, so humming patterns might be different during the summer months.

I wonder if Earth's constant humming annoys the other planets?

Good question!!!

An excellent clip!

I bet the earth is humming because it is happy. So much for global warming.

Probably humming the theme from Gilligan's Island...oh no! Now I can't get it out of my head! AAAAHHHH!

@all