Nearly half the fruit and vegetables sold in U.K. supermarkets since 1998 contained pesticide residues, according to an analysis of government pesticide data by Friends of the Earth. The group said most of the residues were within legal limits, but it raised concerns that the individual chemicals could be dangerous in combination, especially for unborn children and young children. It called for the government to improve its research into the effects of chemical combination and to develop a plan to reduce pesticide use. A supermarket spokesperson said the group was misrepresenting the government data.