Five years ago: Thousands of cheering Catholic schoolchildren feted Pope Benedict XVI on his second day in Britain, offering a boisterous welcome, as the pontiff urged their teachers to make sure to provide a trusting, safe environment. A scientist and his wife who once worked at a top-secret U.S. nuclear laboratory were arrested after an FBI sting operation and charged with conspiring to help develop a nuclear weapon for Venezuela. (After pleading guilty, Pedro Leonardo Mascheroni was sentenced to five years in federal prison while his wife, Marjorie Roxby Mascheroni, received a year and a day; the U.S. government has never alleged that Venezuela or anyone actually working for it had sought U.S. secrets.)
