Chicago’s Talk-A-Phone unveils its Wide-Area Emergency Broadcast System (W.E.B.S.), an IP-based family of mass notification devices that can be integrated into a comprehensive emergency communication ...

CLAIM: An emergency broadcast system test on Oct. 4 will send a signal to cell phones nationwide in order to activate nanoparticles such as graphene oxide that have been introduced into people’s ...

Growing up, the Emergency Broadcast System was a kind of sonic boogeyman. Its signature harsh tone would cut through your favorite TV show or song on the radio, announcing that “THIS IS ONLY A TEST”.

WASHINGTON — On Wednesday, Oct. 4, around 2:20 p.m. Eastern Time, cell phones, TVs and radios across the country will blare an alert as part of a nationwide test of the Emergency Alert System. While ...