France has passed a law that will make it illegal to keep lights turned on over night in non-residental buildings. Starting in July the lights need to be out an hour after the last employee leaves. This is a great way to save energy while reducing light pollution.
The move, announced on Wednesday, is expected to save 250,000 tonnes of CO2 â€“ enough energy to power 750,000 French households for a year.
The French ecology minister, Delphine Batho, said she hoped the law would change attitudes in France and help the country become a pioneer in reducing light pollution.