Currently Hong Kong has over 80% of the international flights out of the Pearl River Delta. With the 3rd Runway proponents hope to maintain a large share of this growing market. But with only 7% of the population and manufacturing moving ever further land inwards, how sensible is that? The economic gains benefit a few, while the rest of the community pays. It is not just the money: Air pollution, noise, loss of marine habitat, and traffic – lots of it.