France has recently introduced an environmental law which makes it obligatory for new buildings in commercial zones to have their rooftops partially covered with either plants or solar panels. Despite the fact that the primary goal of French environmental activists was to pass a law that would require making the entire surface of new roofs ‘green’, the potential benefits of commercial buildings with partially covered roofs are still very promising. The French government wanted to avoid approving a law that would impose too many additional costs on businesses, which could possibly have negative effects on the economy. “ This draft law is a very positive step forward and a concrete lever for greener and smarter cities ,” James Watson, CEO of the European Photovoltaic Industry Association, told CBSNews . “ There are so many unused rooftops in our cities today and solar photovoltaics is the perfect solution to make the best out of them as it can be seamlessly integrated...