By David Hambling
The US Marines are developing a new laser weapon that can transmit voice messages at long range, or be turned up to deafen, dazzle or cause painful burns.
The Scalable Compact Ultra-short Pulse Laser System (SCUPLS) will be a non-lethal weapon for crowd control or , according to US Navy documents.
The weapon builds on previous prototypes developed by the Pentagon. An igniter laser fires an intense pulse lasting just a few million-billionths of a second powerful enough to create a ball of plasma, which …