Guardian: The Mayor of Londons office has strenuously defended the citys record on air pollution, insisting that it is far from the worst polluted city, despite data showing that nitrogen dioxide (NO2) levels have been higher than anywhere else yet recorded.
Boris Johnsons top air quality officials told the Guardian that it was ludicrous to put London in the same category as capitals such as Mexico City, Delhi and Beijing, and other cities.
Its not even comparing apples with pears, it is comparing...