The Kola Superdeep Borehole is the deepest manmade hole, and deepest artificial point, on Earth, measuring at 40,230ft feet. To put it into perspective, that's 12.2km, or 7.58 miles - that's the ...

We'll need to drill down to the Earth's core since it's sufficient for 20 million years. A great amount of geothermal energy ...

During the Cold War, the US and Soviets both created ambitious projects to drill deeper into the earth than ever ... Find out more about the Kola Superdeep Borehole in this BBC Future article.