signal

A COMPREHENSIVE SERIES OF ARTICLES ON THIS TOPIC

Astronomers detect radio ‘heartbeat’ billions of light-years from Earth

Astronomers have detected a strange and persistent radio signal from a far-off galaxy that appears to be flashing in a pattern similar to a heartbeat.

Wed, 13 Jul, 2022

Encrypted messaging app Signal blocked in China

Encrypted messaging app Signal appears to have been blocked in mainland China, the latest foreign social media service to cease working in a country where the government tightly controls the flow of information.

Tue, 16 Mar, 2021

WhatsApp growth slumps as rivals Signal and Telegram see downloads increase

Experts believe the shift may reflect a rush of conservative social media users seeking alternatives to platforms such as Facebook, Twitter and Parler

Thu, 14 Jan, 2021

Disconnected

People old enough to remember that it sometimes took more than a year to get a telephone installed in a home will have considerable empathy with the primary schools unable to use computer equipment they have paid for because they do not have an adequate internet signal.

Sat, 05 Apr, 2014