Energy for Sustainable Development
Esd Bulgaria: Kids & Energy: Energy Pioneers: Lee De Forest
A profile of Lee de Forest who lived from 1873 to 1961. He was one of the most important inventors of radio and electronic technology, whose inventions touch everyday life.
PBS
People and Discoveries: Lee De Forest
A biography on audion inventor, Lee de Forest, from childhood on. Hyperlinks to additional information about the radio and broadcasting.