Andhra Pradesh is working hard to become a green hydrogen hub and to take the lead in the area of artificial intelligence (AI) development, Chief Minister N Chandrababu Naidu told NDTV at the World Economic Forum (WEF) meeting in Davos. Green hydrogen is a clean energy source that only emits water vapour and leaves no residue in the air. Mr Naidu, who comes to Davos as part of the 'India Story', said he is keeping a keen eye on the latest global trends on investments.