Lasers, magnets, and drones are part of the effort.
Here's What You Need to Know: The U.S. Navy should beware.
China is making great efforts to detect U.S. submarines.
Scientists at a Chinese research institute say they developed an airborne laser that might eventually detect hostile subs even at great depths.
Meanwhile, scientists at another institute also claim to have developed a magnetic detection device that might spot subs.
Researchers at the Shanghai...
Read this story at The National Interest