With 102 holes drilled so far, hundreds of measurements have been made of ice thickness and snow cover over the 243km covered to date.

BBC: Arctic team: 'London, we have a problem'

Calabresi says his next step will be to look at changes in the fiber layer thickness in 100 patients over a period of three years.

CNN: Can an eye exam detect multiple sclerosis?

Firstly, the two wells are monstrously deep well, with over 3, 000 feet net shale thickness.

FORBES: UK Shale Gas: How Deep Is It?

By flying transects over the ice, a picture of its thickness emerges.

BBC: Arctic ice melting at 'amazing' speed, scientists find