Scientists studying our planet have a pretty good idea of what goes on up here at the surface. Understanding what's going on deep underground or in the depths of the Earth's oceans is another matter ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. In 2018, a multitude of seismic signals were ...

Ever since we humans started learning more about outer space and the existence of other planets out there, we've imagined whether there is life somewhere else in the universe. But perhaps this recent ...

In the vast silence of California’s deserts, you might sometimes hear a deep, humming sound that seems to come from nowhere. Some call it “singing sand.” Others describe it as the desert’s secret ...

Scientists puzzling over a mysterious humming sound below the Pacific Ocean believe they’ve finally figured out its source. Described as similar to the faint buzz or hum inside an airplane, it would ...