Remember the big Hum heard around the world that freaked everybody out? According to geologists, its not as weird as it sounds... especially if you think Mother Earth should make noises when she gives birth to new volcanoes.
That's what the noise is, apparently: the noise made when magma rumbles during a geologic event. In some ways this might be a disappointment, but I think it's pretty incredible--not only that such an awesome sound could be made but that we could even discern its origins in the first place.
Have you heard about any other incredible mysteries solved this week? Share them in the chat!