Solar water bulb' to brighten homes in Kenya and Philippines

A youth group is hoping some 2-liter plastic bottles filled with water and bleach can brighten Kenya's slums. The soda bottle-as-lightbulb was first discovered in Brazil by mechanic Alfredo Moser in 2002. In the decade since, tens of thousands of people who can't afford electricity or other sources of light like candles have converted to the water bottle lightpoint. In the Philippines, a non-governmental organization is attempting to use the solar water bulb to brighten 1 million homes by next year. The project is known as 'Isang Litrong Liwanag,' which translates to 'A Litre of Light.'