Bubbles aren't just for bath time anymore — turns out they can also be used to improve the fuel efficiency of cargo ships.
An array of powerful air pumps on the ship's underbelly blows streams of small bubbles around the ships hull. This creates a pocket of air between the hull and the water, so that a good portion of the hull is not touching the water.
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The blanket of bubbles greatly reduces friction, allowing the ship to move faster and more efficiently through the water. Mitsubishi predicts that their air lubrication system can reduce CO2 emissions by 25 percent compared to conventional cargo ships.