What happened to the missing Argentine submarine? An unusual signal may provide clues.

As search teams were continuing to search for the missing ARA San Juan submarine Thursday, a Vienna-based organization announced that its scientists had detected an “unusual signal” underwater in the proximity of the area where it had gone missing days earlier. The Vienna-based Comprehensive Nuclear Test-Ban Treaty Organization usually focuses on monitoring possible violations of a treaty which […]

Source: http://www.washingtonpost.com/blogs/worldviews/wp/2017/11/24/what-happened-to-the-missing-argentine-submarine-an-unusual-signal-may-provide-clues/