TechnologyWhy bizarre Cold War hoverboats are making a comeback Sea-skimming crafts – which fly just above the water – were once considered Cold War relics of a failed Soviet experiment. Now, China and the US are resurrecting the technology as a possible Pacific conflict looms News
TechnologyShipping firms are blowing bubbles under their ships to reduce drag An increasing number of large shipping companies are trying out technologies that blow bubbles underneath a ship's hull, in an attempt to save fuel and reduce emissions News