3 Birds with One Stone

I love hearing about these ideas that solve several problems at the same time.

Kenya's huge and squalid slums don't have much of anything, except mountains of trash that fill rivers and muddy streets, breeding disease.

Now Kenyan designers have built a cooker that uses the trash as fuel to feed the poor, provide hot water and destroy toxic waste, as well as curbing the destruction of woodlands.

After nine years of development, the prototype "Community Cooker" is close to being rolled out in overcrowded refugee camps as well as slums around the country where the filth encourages diseases including cholera.