We visit the largest geothermal operation in the world to see how heat from the earth's core is transformed into electricity. We meet a chemist, geologist, plant operator, environmental manager and engineer as they show us how they manage steam production wells and electric generators. This growing field relies not just on professionals with advanced degrees but entry- level workers who drill the wells and maintain the power plants in this vanguard...

For centuries, the residents of the underground City of Ember have flourished in an amazing world of glittering lights and quiet contentment. But when the City's massive power generator begins to fail, the streetlamps fade - along with the hopes of the townspeople. Now it will be up to two courageous teenagers to follow a trail of clues left by the ancient builders to find the way out of Ember before their world is plunged into complete darkness.