the average British home warmed from a chilly 13C to 18C. In the US, the changes have been at the other end of the thermometer as the proportion of homes with air conditionings rose from 23% to 47% between 1978 and 1997. In the southern states – where...
and in 1976 the government announced the Fiscal 1978 Emissions Control Standard, at the time the most stringent standard in the world, requiring that NOx levels be reduced to no more than one-tenth the pre-1973 level.