In article , "Don K"
wrote:

"paghat" wrote in message
news



Man-made aluminum & aluminates MIGHT have some involvement in the
development of alzheimers disease, though years back when Science Digest
did a whole issue about it, looked like only about one out of ten
researchers thought it much likely.

Aluminum is an element and strictly speaking, is not something that
is man-made.

Pure aluminum does not exist in nature, & its existence was not even known
until 1808, & it was another 80 years before it could be extracted
affordably from boxite & alumina. Boxite is found just about everywhere in
nature; aluminum per se is not. When metalurgists first learned to purify
aluminum from boxite, it cost more per ounce than gold. Nowadays it costs
us here in the Northwest our salmon resources, there being no more salmon
runs at all in rivers & streams near aluminum plants.

-paggers

--
"Of what are you afraid, my child?" inquired the kindly teacher.
"Oh, sir! The flowers, they are wild," replied the timid creature.
-from Peter Newell's "Wild Flowers"
See the Garden of Paghat the Ratgirl: http://www.paghat.com/