The American Chemical Council has hit back at research released on 4 February by the University of Cincinnati, USA, which suggests that cumulative environmental exposures to bisphenol A (BPA) from polycarbonate bottles might harm human health. In a statement issued by the Council, it argues that BPA has been approved for use following extensive study, supported by recent research undertaken by bodies such as the Norwegian Food Safety Authority.'Bisphenol A is not a risk to human health at the extremely low levels to which consumers might be exposed," the Council argues. Scientists at Cincinnati, however, say boiling water can cause BPA to be released from new & used polycarbonate drinking bottles up to 55 times more rapidly.