Leaving vehicle engines idling is unhealthy, expensive – and often illegal

When a vehicle is stopped but the engine is running, it's still burning gas and emitting pollutants. AP Photo/Rick Bowmer A bus company that left its buses’ engines running while parked in Boston neighborhoods has settled a lawsuit by agreeing to pay US$5.6 million in damages for the resulting air pollution. The settlement came in a citizen-enforcement lawsuit under the Clean Air Act, which allows any person to sue alleged polluters for the harm done to human health and the environment. The…