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What can you do if you don’t have access to running water? No pipes, no wells, no rainfall? The solution may be to catch water from fog.

We meet Abel Cruz, the Peruvian man behind a huge fog net project which is providing water to a community in the slums of Lima.

Could fog catching be a solution to wider water crises facing the world?

Also on World Hacks, we hear a big idea about giving soldiers weapons that do not kill.

Image caption: Fog nets in Peru / Image credit: ´óÏó´«Ã½