Doctors say that over time the damage interferes with the natural exchange of oxygen and carbon dioxide in the lungs.
VOA: special.2010.06.23
A lot of damage was caused by this crisis. It is going to take some time for us to grow out of this.
VOA: standard.2009.11.01
Critics say that new, independent research proves the system will damage the Australian economy and cost jobs if it is introduced at a time of global recession.
VOA: standard.2009.05.03
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