fresh air

ahh. I will just step outside for a bit of fresh air. this will help me concentrate again.. ever thought that fresh air is a very valuable good? probably! especially if you have experienced good and bad air in comparison. a recent study shows that, if we are not taking care of our environment a bit better, air quality will stink, i mean, sink more and more.. read more, for example about the Population-Weighted Multi Pollutant Index (PW-MPI), here: Link