
Many San Francisco citizens witnessed a fantastic double rainbow backed by a sunset last night. SFGate posted some great images of this beautiful natural event, and we found a few more on Flickr. Double rainbow, what does it mean?

Many San Francisco citizens witnessed a fantastic double rainbow backed by a sunset last night. SFGate posted some great images of this beautiful natural event, and we found a few more on Flickr. Double rainbow, what does it mean?