Wall Street Journal: Might it be that it was Ronald Reagan and not Barack Obama who began to slow the rise of the seas? That is one conclusion that could be drawn from a new paper by Canadian physicist Qing-Bin Lu of Ontario's University of Waterloo. Instead of carbon dioxide emissions, Mr. Lu argues that ozone-depleting chlorofluorocarbons (CFCs) and other halocarbons caused global warming. Thanks to the Reagan administration and the 1987 Montreal Protocol, CFCs have been phased out by developed countries. After a lag,...