Buildings of the future could be “clothed” in a flexible, power-generating material that looks like denim. The Canadian company developing the material says it can be draped over just about any shape – greatly expanding the number of places where solar power can be generated. The inventors hope their power-generating material will enable architects to design complex, curvy buildings that can nevertheless carry solar cells. One day, consumer products such as personal stereos and cellphones might also harness “denim-power” to charge their batteries.