http://nakeddiscovery.com/libsyn/Naked_Scientists_Show_09.10.11.mp3 Naked Scientists 09.10.11 - Why does Water Expand when it Freezes? http://www.thenakedscientists.com/HTML/podcasts/show/2009.10.11/ 2009-10-13 http://www.thenakedscientists.com/HTML/uploads/tx_naksciconfig/temp/NS_Podcasts_600_1.png