Stories by David Pescovitz

Engineers are creating artificial replacements for failing hearts, kidneys, pancreases and livers

Robodocs may be here, but remote surgery remains remote

As chips shrink, researchers look to optical and radio-frequency interconnects

Distributed computing over the Internet goes commercial

A sensor to detect a biological warfare attack in seconds

Entrepreneurs look for ways to put old computers to good use

Free-air optical networks go for a test run