How one ship engine could make hydrogen at sea and sidestep storage hurdles

Each year, international shipping moves over 80% of global trade and emits around 1 billion tons of greenhouse gases. Heavy fuel oil remains the industry's workhorse, prized for its reliability and energy density but notorious for its carbon footprint. As the International Maritime Organization pushes toward net-zero emissions by 2050, the search for viable carbon-free fuels is on.