Lost and found technology (Score 1)

Didn't read TFA, this being slashdot and all, but isn't there a shitload of old true-and-tried local technologies that are not anymore common knowledge in famine and civil war-ridden countries? I'm talking about stuff like traditional fuel-efficient ovens, food storage solutions, hygienic dry toilets etc..

Bringing that stuff back would have major impact on daily lives and be logical first step of this kind of program.