All that mining and trucking rock around was expensive, even though the basic idea, heating the rock, has always been very simple, so simple that you can even do it at home, as NPR's technology reporter Nell Boyce explains.

NPR: Industry Seeks to Extract Oil from Rocky Mountain Shale

Only 31% of families could provide all eight basic essential items, like heating and warm clothes.

BBC: Parent walking with two children

It offers basic shelter and a handful of bunk beds but no blankets, heating or water.

BBC: Italy��s wilderness, far from the madding crowds

This money will be spent to restore the capacity of basic public services such as water supply, electricity importation, water sanitation, heating plants and road repair.

CNN: Q&A: Yugoslavia donor conference