Brunei Darussalam has been ranked the second lowest polluted country in the world with Pollution Matter 2.5 (PM 2.5) mean annual exposure and just 5.9 microgrammes per cubic metre (μg/m3), according to Oxford University’s Our World in Data platform. The lowest polluted country is Finland with (5.86μg/m3) and just three deaths per 100,000. This is
