Since August2005, when visits to an Eritrean village prompted him to research global access to artificial light, Mark Bent,49, a former foreign service officer and Houston oilman, has spent$250,000 to develop and manufacture a solar-powered flashlight.

• 自从2005年8月，49岁的班特走访厄立垂亚村落，促使他开始研究全球使用人造光，这位前外籍军官及休士顿石油商，已投入25万美元开发及制造太阳能手电筒。