Frederick Buechner wrote that there is a time for looking back over the past "and trying to figure out where we have come from and where we are going to."
Passive Solar - Gallery
Courtesy, Jim Arwood and Arizona Solar Center
NOTE: Photos obtained from the photo gallery are to be used for lawful purposes only. Any commercial use must receive prior approval from the Arizona Solar Center. Credit shall be given to Photographer along with Arizona Solar Center, and no affiliation with Arizona Solar Center is to be implied.