White Room

Machine-to-machine technologies (technologies that facilitate the connectivity of physical infrastructure and devices) can help decrease emissions by roughly ten billion metric tons by 2020, according to a report by AT&T.

The world's cumulative photovoltaic capacity crossed the 100- gigawatt mark in 2012, showing evidence of an increasingly global PV market.

Some parallels exist between the solar industry and the early PC industry as companies are finding creative ways to produce the cells at lower cost.

Will California's statewide green building codes advance energy-efficient construction or undermine stricter standards like LEED? The CALGreen codes promote efficiency without the costs of third-party certification, but critics note that the standards are prescriptive rather than performance-based.