TED: Deep under the earth's surface, discovering beauty and science | Francesco Sauro

The video explores the hidden underground landscapes of Earth, focusing on caves and their unique geological and biological features. It highlights the vast unexplored cave systems, particularly in karstic regions, and the scientific discoveries made in quartzite caves of the tepui mountains. The video also discusses the implications of these findings for science and future exploration, including training astronauts in cave environments.

What new insight or understanding did you gain from this video?