On Sat, 03 Oct 2009 18:02:08 -0400, Nate Nagel
wrote:

there's two kinds of smokes, ionization and photoelectric. Ionization
are the ones that use a small pellet of americium and once it loses its
radioactivity it's toast.

Could we make nuclear bombs out of americum? That way the
radioactivity woudln't last that long. And it might be good publicity
for our hemisphere.