Are physicists searching for how the universe works designers? Lisa Randall: Knocking on Heaven’s Door – Studio 360 http://t.co/R09HM1Tb 0 @ayssar found: http://t.co/R09HM1Tb> http://twitter.com/ayssar/status/223507278253395969> EmailPrintTwitterFacebookLinkedInMoreReddit Tagged with links tweeted twitter