In much of Africa, limited and unreliable grid coverage means many depend on polluting diesel generators to power their homes and businesses. South African start-up Hyena has a new hydrogen technology ...

Hydrogen! It’s a highly flammable gas that seems way too cool to be easy to come by. And yet, it’s actually trivial to make it out of water if you know how. [Maciej Nowak] has shown us how to do just ...