Check out this inspiring 2-minute video about how recycled bottles can reduce electricity bills for the people living in the Philippines. It will simply astound you:

Isn’t it amazing what a little human ingenuity can do? Brazilian engineer Alfredo Moser is credited with inventing these solar light bulbs. In 2002, Brazil was having an energy crisis that caused long periods of blackouts. Tired of working in a dark workshop, Moser discovered he could harness the sun’s light by filling bottles with water and putting them in his rooftop. My concern was that these bulbs would leak when it rains, but they don’t. Many residents who have installed solar light bulbs say that they produce a more natural and beautiful light than an incandescent bulb and that they dramatically lower electricity costs for households. For more information about charitable foundations that are helping to install these solar light bulbs, see Isang Litrong Liwanag (A Liter of Light).

It reminds me of a scripture in Doctrine and Covenants 50:24: “That which is of God is light; and he that receiveth light, and continueth in God, receiveth more light; and that light groweth brighter and brighter until the perfect day.”