
Re: "PM2.5: Endless deja vu in Thailand", (Opinion, March 13).
Every year we have terrible pollution and no serious measures to rectify this are proposed. Why not simply implement measures that have been proven to work elsewhere?

Re: "PM2.5: Endless deja vu in Thailand", (Opinion, March 13).
Every year we have terrible pollution and no serious measures to rectify this are proposed. Why not simply implement measures that have been proven to work elsewhere?