Chinese scientists want to use lasers to power ultrafast, stealthy submarines. A laser expert says there's a major flaw in their plan.

Source: Business Insider

A nuclear-powered Type 094A Jin-class ballistic missile submarine of the Chinese People's Liberation Army (PLA) Navy in 2018. ReutersThe US and China are in a race to develop the most advanced submarines.   Chinese researchers say they have made a breakthrough in laser propulsion technology that could one day be used on submarines and missiles.