A report on multinational companies that are rushing to develop and import liquefied natural gas, LNG, a resource that is cheap to transport but many countries fear could pose risks to large population centers that lie near storage facilities.

A 35-year-old technology -- light emitting diodes or LEDs -- is getting a new life these days as a potential breakthrough for an even older technology -- the light bulb. Spencer Michels of the Science Unit provides a report.