Causes www.bangkokpost.com PM2.5 levels surge in Chiang Rai Haze pollution in the North resumed on Sunday when the level of harmful PM2.5 in Chiang Rai province was at again recorded at high levels, together with increasing levels of microparticles found in many provinces in the North.
Impacts Deep trouble Nat Sumanatemeya, an underwater photographer whose pictures help us see what's happening to our oceans.
