Last week, we celebrated UnPower Hour and Earth Hour for the 10th year in a row. Hundreds of students, faculty and staff from almost every department participated either via Web or by signing up locally with the Green Leaders in each area. The events sparked many conversations on how to be "greener" at home and at work, and how small decisions we make in our daily lives have an impact in the environment and the planet.

This year, our Laboratories all over campus participated en masse,...