An example of this was when a pine tree in south ... far exceeding 1,500 grains of pollen per cubic meter of air, which is what's considered extremely high. Heavy rains earlier in the week caused ...

for example, during welding of stainless steel or the manufacture of paints and rustproofing. Thirty years ago, the limit for hexavalent chromium in Sweden was set at 5 micrograms per cubic meter ...

when it recorded nearly 15,000 pollens grains per cubic meter of air. The previous record of 9,368 was blown away with the 14,801 reading by Atlanta Allergy & Asthma, which would explain the yellow ...