Since the 1990s, scientists have known that Earth emits a constant humming sound that can't be heard by human ears.

Scientists think the humming might be caused by the rumbling of the oceans or forces in the atmosphere. 

But the Earth doesn't just hum—it screams too.

As a story on space.com reports, "Earth emits an ear-piercing series of chirps and whistles."

These sounds, caused by cosmic particles colliding into the Earth's magnetic field, are "awful."

Scientists have known about this phenomenon since the 1970s. But to get to the whole truth, we need to go farther back than that.

Three thousand years ago, King David of Israel wrote:

"The heavens proclaim the glory of God. The skies display his craftsmanship. Day after day they continue to speak; night after night they make him known" (Psalms 19:1-2 NLT).

Apparently, David knew all about the Earth's hum. And 2,000 years ago, the apostle Paul wrote, "For we know that the whole creation groaneth and travaileth in pain together until now" (Romans 8:22 KJV).

Was Paul talking about the "ear-piercing series of chirps and whistles" heard in the recording made in space of the Earth's cries?

In Development As Freedom, Amartya Sen, winner of the 1998 Nobel Prize in Economic Science, tells a story about Bertrand Russell. Russell, an atheist, was asked what he would do if he met God in the hereafter.

According to Sen, Russell is supposed to have said, "I will ask him: God Almighty, Why did you give so little evidence of your existence?"

The evidence is all around us—in the humming of the oceans and the cries of the Earth's magnetic field. That's why I have overflowing hope. 

And that's why some things are true even if—like Bertrand Russell—you don't believe them.