Engineering with Rosie - How It Works and Why We Need It? Green Hydrogen, Ammonia and Steel Certification Explained, 11112021

How can you tell a green hydrogen molecule from a grey one? Or green steel, ammonia or any other green version of normally dirty commodities? If we're going to pay more for the green option, we need to be able to trust it's green. Dr Jemma Green, Cofounder & Chairman, Powerledger, tells us how they use blockchain technology to ensure trust in these emerging commodity markets