Every year around this time, factories in China are finishing up orders and sending them across the world to arrive in time for the holiday shopping season. But this year, they may run out of time.
Exhaust from diesel fuel contains thousands of chemicals and more than 40 toxic air contaminants. That’s especially dangerous for children who ride diesel-fueled school buses and wait in line among their fumes. But while efforts to cut down pollution are working, more enforcement is still needed.