What the alleged ‘sonic weapon’ used in Venezuela may actually have been

Claims that a mysterious "sonic weapon" was used in Venezuela have fueled speculation about exotic U.S. military technology and its potential effects on the human body.

One eyewitness account from a Venezuelan guard, shared on social media by White Hosue press secretary Karoline Leavitt, claimed the weapon brought Venezuelan and Cuban security forces to their knees, "bleeding through their nose" and vomiting blood. 

While the Trump administration has not confirmed what weapon, if any...