Wall Street falls on earnings concern; Amazon rallies

U.S. stocks fell on Friday, pressured by concern over euro zone stability and its potential impact on U.S. corporate results and by domestic economic growth data. U.S. economic growth slowed sharply in the fourth quarter as weak business spending and a wider trade deficit offset the fastest pace of consumer spending since 2006. Adding to concerns, Greece's finance minister said the government would not cooperate with the European Union and International Monetary Fund mission bankrolling the