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Insects are very successful creatures. They
are very adaptable and,  because
of their own variable genes, can quickly overcome poisons used by humans.
Every time a new poison -
- is made, within a few years, pesky insects become immune to it. The
same is already happening with the new transgenic plants which make their
own insect poisons. Unfortunately, these same poisons are very important
in
farming (farming without chemicals and artificial poisons in a nature-friendly
way) as a weapon of last resort. Organic farmers use it only occasionally
and it's very effective because the pests have no chance to get used to
it. The transgenic crops will be making this poison all the time in every
part of the plant - roots, stems and leaves. What will the effect be on
people or animals which eat them? Very suggest that some may be harmful. They are certainly harmful
to the insects (predators) which eat other insects (prey) which have started
to feed on the plants.
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