ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
*****************************************************************************

I read recently that the problem of immense and deadly radioactivity between
here and Mars is not solvable by any mechanism currently known of or even
imagined. It's like the problem of nuclear energy. All the safety and
economic debate about it is rendered moot by the fact that a byproduct of it
is a deadly poison whose half life is measured in the hundreds of thousands
of years. So most of the debate about humans going to Mars is rendered moot
by the fact that we can't withstand the radiation we would experience in
getting there.

Phil Edgerton, The Health Adventure
Asheville, NC, who promises to use spell check from now on.

***********************************************************************
More information about the Informal Science Education Network and the
Association of Science-Technology Centers may be found at http://www.astc.org.
To remove your e-mail address from the ISEN-ASTC-L list, send the
message  SIGNOFF ISEN-ASTC-L in the BODY of a message to
[log in to unmask]