Airships for the 21st Century
Long-duration, heavy-lift designs breathe new life into the world's oldest aircraft technology
Ferraris, just like Fords, must now conform to environmental regulations
By Lawrence Ulrich
Conservation voltage reduction could be an easy win for smart grids
The controversial technology poses proliferation risks, but nuclear firms press on
Computer scientists use sparse matrix values to generate beautiful images
Want to test your hacker prowess? Try to beat this scratch-built Web server
The language of life-cycle inventories has its own life cycle
Electric-window motors, a tripod, and a Skype-equipped netbook provide the makings of a robotic surrogate
The Serbian engineer's equations model blood flow and could predict heart attacks
Real-world laborers make real-world money in virtual worlds. But maybe not for long