SciShow

The Deepest Hole in the World, And What We've Learned From It (2014x69)

Ημερομηνία προβολής: Μάϊ 05, 2014

SciShow takes you down the deepest hole in the world -- Russia's Kola Superdeep Borehole -- explaining who dug it and why, and what we learned about Earth in the process. Don't fall!