[slowhandluke]

How do the DDT proponants explain the comeback of the birds of prey, who supposedly had concentrations of DDT in their blood levels being concentrated, by being meat-eaters, and their eggs so thin-shelled they could not hatch out?

Basically, the premise (the low levels of DDT in the enviroment caused thin egg shells) is false.

see this DDT FAQ, egg shells

[slowhandluke]

For those that don't want to read the whole list, these are some of the corrupt practices used to justify the DDT ban.

61. Egg shell deficiencies were attributed to DDT and DDE by U.S. Fish and Wildlife researchers even though the birds had been placed on low-calcium diets. (see also 60. Calcium deficiency is associated with thinner shells.)

63. DDT was blamed for egg shell thinning even though a known egg shell thinner (dieldrin) was also added to the diet.