When California Institute of Technology (Caltech) officials decided to renovate an elegant Spanish Colonial Revival laboratory building and make it into a center for climate-change research, they were determined to create a facility that reflected the ideals of its occupants. For the Linde Center for Global Environmental Science, they decided to go beyond LEED Gold certification, the campus standard for new construction. They set their sights on Platinum, a level of certification that the designers maintain is unprecedented for the rehabilitation of a historic laboratory building.