With the papal encyclical on climate change scheduled for a June 18 release, the liberal media can be expected to portray the Vatican document as a major step forward for the United Nations agenda of controlling and taxing the use of natural resources by governments and people. But a group of retired NASA scientists is taking on the pope directly, armed with the expertise that has come through decades of planning U.S. space missions and dealing with the most complex and difficult issues of climate science.