Some supposed have been accompanied by unexplained physical evidence that deserves serious scientific study, an international panel of scientists has concluded. In the first independent scientific review of the controversial topic in almost 30 years, directed by physicist Peter Sturrock of Stanford University, the panel emphasized that it had found no convincing evidence of extraterrestrial intelligence or any violation of natural laws. But the panel cited cases that included intriguing and inexplicable details, such as burns to witnesses, r ....