A team of scientists with years of expertise in climate issues has written an open letter to Congress, warning members that, "The sky is not falling," and global warming alarmism is unproven. The letter was signed by physics professors Robert H. Austin and William Happer of Princeton, environmental sciences professor S. Fred Singer of the University of Virginia, retired manager for strategic planning at ExxonMobil Roger Cohen, physics professor (emeritus) Harold W. Lewis at UC-Santa Barbara and others. Their names trail long lists of initials including APS or the American Physical Society, AAAS or the American Association for the Advancement...