The depths of Earth have puzzled the scientific community for millennia. For many years, we only had access to natural holes, ...

America might have landed on the moon, but Russia drilled the deepest man-made hole on Earth. Since the early 1960s, scientists have attempted to drill down to the Earth's mantle. It took 20 years ...

The wildlife documentary series narrated by David Attenborough goes on groundbreaking journey to the deepest parts of the ... the largest living space on the planet. Scientists already think ...