An interview with Jeff Lipton, a 3-D food printing pioneer.
Southern Arizona congressional surprise
Martha McSally challenged Congressman Ron Barber and has surprised many observers by keeping the race too close to call. Tucson Weekly's Jim Nintzel talks about McSally's appeal and whether former Representative Gabrielle Giffords' popularity should have meant more for Rep. Barber. Nintzel also addressed Richard Carmona's challenge in the Senate race against Congressman Jeff Flake.