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BBC radio 4- keep digging
Mary-Ann Ochota asks why scientists have managed to send probes to interstellar space, but haven't yet managed to reach the Earth's mantle, which lies just a few miles beneath us.
This documentary podcast examines the historical background leading to the renewed scientific efforts to drill an ultra-deep scientific borehole to drill to the Earth's mantle and answer the question "What is the Moho?"
Follow along with Expedition 360 as it explores the crust-mantle transition and seeks understand more about how our Earth works!
1 minute 36 seconds
Expedition 360 at a Glance
During December 2015 and January 2016, 122 people set off on an expedition to begin drilling a hole in the middle of the Indian Ocean that may one day be the first to reach all the way through the Earth's crust to the mantle. This is a brief glance into the daily sights aboard the ship.
3 minutes 7 seconds