People shop for groceries in a market in the shadow of the Huaneng Beijing Terminal Power Plant. Local restaurant owners and shop keepers say the air around the power plant has been cleaner since it switched from coal-burning to natural gas in recent years.

People shop for groceries in a market in the shadow of the Huaneng Beijing Terminal Power Plant. Local restaurant owners and shop keepers say the air around the power plant has been cleaner since it switched from coal-burning to natural gas in recent years.