The Washington Post

At first glance, it might seem obvious where the United States should focus on building more renewable energy. Stick the solar panels in sunny Arizona and hoist up the wind turbines on the gusty Great Plains, right?

Well, not necessarily. A recent study by researchers at Carnegie Mellon University offered another way to look at the issue. A solar panel built in cloudy New Jersey can actually offer more overall benefits than one built in Arizona — when you take into account all the carbon dioxide and other pollutants that get reduced. Likewise, a new wind farm in West Virginia can deliver more health benefits than one built in California, at least in the short term.