Low-sulphur fuel may lead to longer lives

In July 1990, Hong Kong instituted a total ban on high-sulphur fuels. Since then, cars, lorries and power stations have only been allowed to burn fuels containing less than 0.5 per cent sulphur.

Health effects have been dramatic, with young children suffering considerably less chronic bronchitis, and the population as whole experiencing a substantial drop in overall death rates.

Also, after 12 years of a largely sulphur-free environment, women are now living an estimated eight months longer and men more than twice that time (Lancet, 2002; 360: 1646-52).