ISEN-ASTC-L is a service of the Association of Science-Technology Centers Incorporated, a worldwide network of science museums and related institutions. ***************************************************************************** I have not tried this, but has anyone heard that a chunk of dry ice won't be affected if you put it in the ole nuker? Jonah Cohen Outreach & Public Programs Manager Science Center of Connecticut "On blind faith they place reliance, what we need more of is science" -MC Hawking *********************************************************************** 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]