> ... oh - and I forgot to add the OCCASIONAL 'EMP' impulse
> which we are subject to and contains a  W I D E range of EM
> frequencies - Lightning strikes!
>
> I've still purporting that *any* EM field mankind can produce
> external to a biological cell is miniscule, weak and meager
> compared to the forces at work *within* the cell as well
> as within a molecule ... leading me to wonder *just what*
> is the 'affectation mechanism' whereby a man-made EM field
> affects or upsets biological organisms or their functions.

Man-made fields that cause heating appear to be of most
concern. "Perhaps" not cellphones, but along the lines of
things like welders (metal and plastic) or transmission towers,
an example being the apocyphal tale of birds cooking in front
of microwave dishes. Most natural events wouldn't cause
localised body heating. Notable exception is getting a few
joules up you if hit by lightning. It's well known that certain
animals, from birds to bugs, have magnetic crystals in cells
that are used for navigation. I've heard that homing pigeons
have gone astray over power plants and that bacteria with
haematite orientation organs migrate (unwillingly and unwittingly ?)
to power cables. If  true, then isn't it possible that the iron
content of our own bodies could be affected by induction ?

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