Hot dry rock geothermal energy makes use of hot fluids found naturally in basement rock; but such HWR conditions are rare. By far the bulk of the world’s geothermal resource base (over 98%) is in the form of basement rock that is hot but dry—with no naturally available water. This means that HDR technology is applicable almost everywhere on earth (hence the claim that HDR geothermal energy is ubiquitous). Typically, the temperature in those vast regions of the accessible crystalline basement rock increases with depth. This geothermal gradient, which is the principal HDR resource variable, ranges from less than 20 °C/km to over 60 °C/km,
Live from the Underground from mainstream publications, the album received an average score of 78, based on 23 reviews. "Spin" named the album the eleventh best hip hop album of 2012. The album debuted at number five on the US "Billboard" 200, with first-week sales of 41,000 copies in the United States. As of August 2012, the album sold 83,000 copies in the United States. All tracks produced by Big K.R.I.T. Sample credits Credits for "Live from the Underground" adapted from AllMusic. Live from the Underground Live from the Underground is the debut studio album by American rapper and record producer Big K.R.I.T.. It