How long does it take to change every light bulb in the federal government? For the good of the environment, members of the House want it done as quickly as possible.

Reps. Jane Harman, D-Calif., and Fred Upton, R-Mich., are pushing to require, through the fiscal 2008 budget, that every federal agency, department and office replace their traditional incandescent light bulbs with energy-efficient Energy Star bulbs. The mandate has so far been added to six appropriations bills: interior, legislative branch, energy and water, state and foreign operations, military construction and veterans affairs, and homeland security.