Energy in South Australia and trap in the deeper heat. Due to the low permeability of granite, the hot rocks must undergo hydraulic fracturing and be stimulated to allow a flow of water through the system to produce energy. This heat is slowly conducted to shallower rocks near the surface. Petratherm propose developing the geothermal energy in the more permeable sedimentary rocks that overlay the hot granite, a process called Heat Exchange Within Insulator (HEWI). While somewhat cooler, in many cases they do not require hydraulic fracturing. It is estimated that one percent of geothermal energy shallower than five kilometres below the earth's surface
Seeds from the Underground Seeds from the Underground Seeds from the Underground is a studio album by Kenny Garrett. It was released on April 10, 2012, on Mack Avenue Records and received two Grammy nominations in Best Jazz Instrumental Album and Best Improvised Jazz Solo categories, as well as a NAACP Image Award nomination in Outstanding Jazz Album category, a Soul Train Award nomination in Best Traditional Jazz Artist/Group category, a Jazz Awards nomination for Alto Saxophonist of the Year and an Echo Award win in the Saxophonist of the Year category. The album received a 77/100 score on Metacritic, based on four reviews