On Tuesday, Dec 14, 2004, at 02:36 Asia/Tokyo, Lynnet Bannion wrote:

> Humans and other critters will go to tremendous lengths to get salt.
> On a video we saw recently, elephants went 100 feet into a bat cave to
> pry
> salt deposits off the wall with their tusks.  It is an essential for

I read that some think those elephants actually created those caves,
over hundreds of years of digging for salt!

Personally I suspect humans always were smart enough to eat extra salt.
It is one more thing I don't overly worry myself about, especially as I
have low blood pressure. The scientific connection between salt and
reduced life span is very very thin.