From Rick Relyea, University of Pittsburgh
In response to my finding that the herbicide Roundup may be lethal to amphibians (9 April, p 5), Monsanto has created a web page criticising my study at www.monsanto.co.uk/news/ukshowlib.phtml?uid=8800. Readers may like to know that there is also now a web page that addresses Monsanto’s concerns at www.pitt.edu/~relyea/Roundup.html.
Pittsburgh, Pennsylvania, US
