PBS
Pbs: Technology and Discoveries
Biographical survey of people who had an impact on 20th century technology and science, including Wallace Carothers, Rachel Carson, Lee de Forest, Henry Ford, Jay Forrester, Grace Murray Hopper, Guglielmo Marconi, William Shockley,...
Smithsonian Institution
Lemelson Center: Innovative Lives
At this site from the Smithsonian Institute you can explore the world of invention by learning about inventors and their inventions. Searchable by name or subject, it is a great way for students to learn about science and technology.