• Dive summary:
• There are several efforts to get a handle on and reduce greenhouse-gas emissions from cities, which means dealing with what is given off by large office buildings.
• One of the groups is called C40 Cities – though like the Big 10 conference that has 12 teams, the C40 group has 58 members.
• Globally, experts calculate that 8% of greenhouse gas emissions come from buildings, and city governments in the group believe that benchmarking building energy performance and encouraging conservation are a good step in limiting global warming that affects cities.

From the article:

"Cities are acting because mayors face the results of climate change," said David Miller, former chairman of C40 and a former mayor of Toronto....