David Beaumont Peakall (17 March 1931 - 18 August 2001) was an internationally recognised Toxicologist. His research into the effects of DDE and DDT on eggshells contributed to the ban on DDT in the US. He proved that the chemicals caused thinning of eggshells, leading to a reduction in the population of various bird species. He also pioneered research on the effects of PCBs on birds. Wikipedia
The definitive Wikipedia entry for David Peakall. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/David_Peakall
