No doubt some "science" is produced with an agenda in mind. One things for sure, lead bullets have been used all over the planet for centuries. People are still here. Birds, fish, reptiles, trees, water and life in general seems to still go on.Lead being a heavy metal tends to bury itself and remain essentially intact in the environment. AND, there are additional sources of lead in the environment besides lead bullets and air rifle pellets that are responsible for animal ingestion. The studies that have shown birds of prey and CA Condors that have ingested lead in their systems could not have got such levels from eating lead bullet fragment contaminated gut piles only.There simply aren't enough gut piles to go around to do that.