Monday, September 10, 2001
At the U.S. Environmental Protection Agency's request, the Proceedings
of the National Academy of Sciences (PNAS) this week plans early publication of papers
clearly indicating that the concerns raised two years ago about the toxicity of Bt pollen
on monarch butterflies are unfounded.
In the now-famous study, Cornell scientist John Losey concluded that
milkweed leaves - the sole item in the monarch diet - were made toxic when dusted with
pollen from Bt corn (see BioCentury, May 24, 1999). Despite criticism of the study