Very soon, two satellites will be launched for measuring the changes in Earth's gravitational force due to mass changes equivalent to 1 cm of water over a quarter of a million square kilometres. The

With the growth of the Internet

Staring at the Sun Welcome to Roque de los Muchaches, one of the Island of La Palma in the Canaries. This mountain is littered with the eerie domes of astronomical telescopes. But amid the white

Using that mobile phone might boost your business, but it might fry your brain

By the end of this year, Lucent Technologies of New Jersey, USA, says that its optical fibres will be able to carry up to a jaw-dropping 400 billion bits of data per second. Although laboratory tests

IBM hopes to make Internet telephony more attractive. When personal computers (PCs) convert speech into data packets, two people can talk over the Internet. But there is no way of sending a ringing

Music will soon be sold and delivered over the telephone. Deutsche TeleKom (DT) is to offer a dial up audio-on-demand service in Germany later this year, allowing customers to compile their own

A new system will allow the hearing impaired to respond to vibrations and alert them about incoming calls

Toll-free phone Installing the right software can transform the computer into a toll- free phone. To connect, both parties must have Internet accounts, the same brand of telephone software

Radio programmes broadcasted in deep space may liven up space flying