Scientists are constantly trying to understand more about our world by conducting all manner of

experiments. But in the past, they've toyed with incredibly dangerous things they didn't

entirely understand that some predicted would have apocalyptic results, from nuclear tests

setting our entire atmosphere on fire to man-made black holes that might tear the world apart.

Well, it's time to grab your lab coats and science goggles as we explore some scary scientific

experiments that could have ended the world.

You're listening. You're listening.

You're listening. You're listening. You're listening. Be amazed. First up, we're traveling over to Russia and back to the 1970s.

This was a time when the USSR was warring with the USA, and both nations were trying to prove which

of them was the superior superpower.

Both were planning separate efforts to drill as far into the earth's crust as possible to see what lay

beneath. But while American efforts were crippled in 1966 due to lack of funding, the Soviets plowed

on, or more accurately, down.

From 1970 to 1994, the Soviets drill on the Kola Peninsula slowly dug the deepest hole

in the world.

The attempt consisted of several super deep holes branching off one main column.

The deepest called SG3 was just nine inches wide

and eventually cut a staggering 7.6 miles into the earth. For contrast, this hole is 4,000 feet

deeper than the Mariana Trench, the deepest place on Earth. While geologists and dirt nerds got very excited, more religious citizens were terrified.

They believed the hole would reach into hell, releasing an army of demons, or maybe even the devil himself.

While they all prayed for protection from the super small demons that could fit through that

nine-inch gap, others feared more logical consequences.

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