Electric cars have been thought of as one answer to our dependence on fossil fuel burning vehicles. Their main appeal is that they produce no air pollution at the point of use so provide a way of shifting emissions to less polluted areas.

Unfortunately also "out of sight" are the environmental consequences of manufacturing and recycling the lead- acid batteries electric vehicles require to run on.

A recent report in Science (Lave et al, vol. 268, p 993. May 1995) drew attention to the problem of lead batteries in electric cars: "Smelting and recycling the lead for these batteries will result in substantial releases of lead to the environment". The researchers compared the power, efficiency and environmental effects of electric cars with petrol powered vehicles. Not only are electric cars comparatively slower and far more restricted in the distance they can travel but release more lead into the environment as well.

Although the lead discharged in lead smelting and reprocessing is generally less available to humans in the U.S. than that dispersed by leaded petrol cars driving where people are living (only one percent of U.S. petrol sold is leaded) - there are still significant hazards. Lead processing facilities release lead into the air and waterways, and lead in solid waste leaches slowly into the environment.

Clearly electric cars, despite their "good for the environment" image create far more of a problem than leaded petrol cars. In addition "If a large number of electric cars are produced, the demand for lead for batteries will surge, requiring more lead to be mined." (ibid, p.995)