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.
On December 13th, 2011. See this statement in context.
On December 13th, 2011. See this statement in context.
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.
See context to find out what was said next.