Fa-la-la-la-la La-la La LA!
Gingerbread used in architectural engineering competition
![Tristen Black makes some repairs on her gingerbread building Thursday at the Tulsa Alliance for Engineering competition. She won first place in adult category. STEPHEN PINGRY/Tulsa World](http://50.63.3.173/wp-content/uploads/2012/12/gingerbread_architecture.jpg?w=300)
Santa visits the Living Roof at the Cal Academy of Sciences
![A pair of reindeer graze on the undulating 2.5-acre living roof that tops the Renzo Piano-designed museum. (In lieu of a chimney, Santa uses an operable skylight.) Photo courtesy of the Cal Academy of Sciences.](http://50.63.3.173/wp-content/uploads/2012/12/calacademyofsciences_santa.jpg?w=300)
Whether you celebrate Christmas, or Hanukkah, or anything else this season, we at a/e ProNet wish you a happy, safe holiday. We hope you spend it with the people you love.