temperatures at the Earth's core, 6,500 kilometres below the surface, are nearly 5,000
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/hot-rocks
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/geothermal-energy
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/energy-technology
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/electricity