Burt Rutan's elegant and efficient aircraft-and spacecraft-designs are in a league of their own. Amy Laboda looks at Rutan's legacy, what he's doing now, and why he may never retire.
If you've ever wondered who invented the ubiquitous light-emitting diode, wonder no more. Columnist Jim Weir explains the origin and evolution of LEDs, and how to wire them up for use in your aircraft.