Some not warming to theory Published 12:01 am PDT Saturday, July 29, 2006 For California, sporadic blasts of withering heat are as typical as earthquakes. Not new. Not unexpected. But able to dominate our days, our nights and our conversations with an oppressive drumbeat of discomfort. So those who study weather and climate weren't surprised to be asked repeatedly if the recent stretch of killing heat was yet another effect of global warming. Their short answer is, if so, global climate change would be just one factor stirred into a confounding brew of other effects, including the routine variability of...