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 ...

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 ...