A Bangladeshi inventor has made a simple yet effective cooler to help poor residents of his country cope with skyrocketing temperatures during summer without any electricity. His tools? Used plastic bottles.
The project is a collaborative effort between Bangladesh's Grey Group and Grameen intel Social Business Ltd., whose volunteers teach residents how to make the eco-coolers with discarded plastic bottles. They have also put up an instruction manual on their website. So far, the coolers have been installed in over 25,000 homes across the country.
