For more than fifty years, scientists have known that the Earth hums. We can't hear the sound as it's at a frequency 10,000 times lower than our hearing threshold but new research suggests that it's coming from the ocean floor. Scientists from the Paris Institute of Global Physics analyzed data from earthquake sensors on the Indian Ocean floor and found the familiar and constant oscillations of between 2.9 and 4.5 millihertz. From National Geographic:
"To better understand where the signal comes from, we believe that observing oscillations from the ocean bottom can help," says co-author Martha Deen...
Since early observations, a number of studies have hypothesized that the Earth's free oscillations are a side-effect of the pounding of ocean waves. Other research suggests the hum could originate from atmospheric turbulence, or the wind motions around the globe, cued by storms. The current study says turbulence could account for part of the vibration, leading the rest to be fueled by ocean waves...
By studying the Earth's hum signal from ocean-bottom stations, scientists can map out a detailed landscape of the Earth's interior. Currently, they can only look at the inside of the planet during earthquakes, which limits studies to certain times and areas. And when looking at seismic activity from land monitors, researchers can't chart places far removed from islands and land masses. But the hum signal, droning and constant, can be detected across the world.
I can’t believe I have to write this, but maybe jamming other people’s shit up your ass isn’t a great idea. When done by medical professions, under very specific circumstances, a fecal transplant can mean the difference between life and death: implanting feces containing healthy gut microbiome into a patient’s body has been used by […]
Good news! This week, folks living in as far north as Michigan may get treated to a stunning light show as Auroras will be shining brighter and further away from the planet’s axis than usual. What a rare treat! The bad news: the same phenomenon that causes the Northern Lights to do their thing could […]
In 1990, once NASA’s twin Voyager probes had completed their grand tour of the solar system, it came time to shut off their cameras to preserve power and memory for the other scientific instruments onboard. But before that happened, there was one last photo opportunity not to be missed. Carl Sagan, a member of the […]
Trains may not be the most popular means of conveyance nowadays, but chances are you grew up playing with toy trains or building a model set to wrap around the Christmas tree. In either case, it’s safe to say that locomotives have long carried a unique sense of awe and scale, especially when they’re hundreds […]
When it comes to redesigning or renovating a living space, envisioning changes before they occur can be tricky for most. Thankfully, the web is home to tools that can remove some of the guesswork, like Live Home 3D Pro for Mac. This app lets you create detailed and furnished floor plans for everything from sheds and […]
For many startups and fledgling businesses, web hosting — and the fees associated with it — can take a sizeable chunk out of the company budget and limit growth down the road. But, that’s not to say there aren’t hosts out there who can get your site online while staying within your budget. Arch Hosting is a […]