Hints and tips:
...Data visualisation by Graham Parrish and Bob Haslett Letter in response to this article: Hydrogen is affordable / From Peter Nicholas, London W6, UK...
...Nicholas Hawker, of First Light Fusion, a UK start-up, has calculated that a fusion reaction yielding 500 times the energy you put in would have costs as low as $25 per MWh....
...Reader Peter Nicholas has already pointed out that $20tn looks less daunting when covered at a rate of under $1tn per year....
International Edition