These are already cheaper and cleaner than burning coal, oil and gas with all their pollutants, especially CO2.

WSJ: The New Nuclear Revolution

"Given the pressing need to reduce our dependence on fossil fuels, especially oil, and to cut CO2 emissions, the future for hydrogen as an alternative means of storing and utilising energy cost-effectively has never been brighter, " said Jim Heathcote, chief executive of ITM.

BBC: Hydrogen refuel station unveiled

Absorption is particularly fast in cold water so the Arctic is especially susceptible, and the recent decreases in summer sea ice have exposed more sea surface to atmospheric CO2.

BBC: Arctic Ocean 'acidifying rapidly'