It is true we have been measuring ozone for decades. As for the effects on health, I think the results are quite recent. Everyone knows the results relating to cancer. This is more recent.
December 13th, 2011 / 11:40 a.m.
Director General, Atmospheric Science and Technology, Department of the Environment
It is true we have been measuring ozone for decades. As for the effects on health, I think the results are quite recent. Everyone knows the results relating to cancer. This is more recent.
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