See how you can save money on utility bills and support clean energy by installing a solar water heater system to heat your home’s water. Leonardo David is a writer and energy consultant who has ...

called the solar water disinfection method (SODIS), in which water is put in transparent plastic bottles and left in the sun for six hours so heat and ultraviolet radiation can kill most pathogens ...

Solar lights are a popular garden decoration ... The design was inspired by the Moser bottle, which is a water-filled bottle used to diffuse sunlight into a room during the day.