SAN PEDRO, California: Floating in the port of Los Angeles, a strange-looking barge covered with pipes and tanks contains a concept that scientists hope to make waves: a new way to use the ocean as a vast carbon dioxide sponge to tackle global warming.
They absorb a quarter of all CO2 emissions, as well as 90 per cent of the warming that has occurred in recent decades due to increasing greenhouse gases. Chemical reactions triggered by electrolysis convert CO2 dissolved in the seawater into a fine white powder containing calcium carbonate - the compound found in chalk, limestone and oyster or mussel shells.
A potential additional benefit of the technology is that it creates hydrogen as a byproduct. As the so-called"green revolution" progresses, the gas could be widely used to power clean cars, trucks and planes in the future.
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