Where I live, our city been building an emission neutral neighbourhood. Lot's of green, and ALLOT of solar pannels ( every house has their own ), and central heating with geo storage. Makes me kind of less pessimistic about being able to still walk here in 20 years or that rising sea water would ensure we'd have to swim.. If they hurry with these innovations, the future is looking very dry ..erhm.. I mean good

I'm abit confused though, electrolyse has been known for ages and I can't really grasp the MAJOR change this time around, maybe a native englisch speaking person can explain what I am missing from the article?