Sentence:  Contrary to accounts in the media, he states, "bugs of this nature don't cause <WSD>China Syndromes</WSD> or missile launches, at least not generally." 
Meaning of the word marked with <WSD> tags:  A hypothetical kind of catastrophic failure in which a nuclear reactor melts through the floor of its containment system and penetrates the Earth's surface, continuing downward as if (from a Western Hemispheric point of view) traveling through the planet toward China.