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A $1 insert for cooking fires cuts wood use and soot pollution by more than half

Update: Please see below for a link to the research paper at Solutions Journal. A steel wedge grate placed in…

Ten Low-Cost Ways to Treat Water

Having money helps, but clean water solutions for low- and middle-income countries don’t have to be expensive. Celebrities like Bill…

Solar PV Cook-stove

The Solar PV Cook-stove cooks food day and night using induction heating powered by electricity from solar PV panels that…