He thinks waiting until we near some suggested limit will just permit us to continue to a point where it is too late .
The biogeochemist William Schlesinger queries whether thresholds are a good idea for pollutions at all .
biogeochemist thinks waiting until we near some suggested limit will just permit us to continue to a point where it is too late .
The biogeochemist William Schlesinger queries whether thresholds are a good idea for pollutions at all .