The Stranger uses The Chicago Manual of Style as a guide for our editing issues, and I enjoy reading its online Q&A section. Although it seems someone has had enough with the questions:
Q. Is there a period after an abbreviation of a country if it is terminating a sentence? “I went to U.K..”
A. Seriously, have you ever seen two periods in a row like that in print? If we told you to put two periods, would you do it? Would you set your hair on fire if CMOS said you should?