In a report Thursday, the IMF forecasts 3.3 percent global growth this year, down from the 3.5 percent it predicted in April. The main culprit: The American economy, world's biggest, shrank at a 0.2 percent annual rate from January to March, hurt by nasty weather.
The IMF is cutting the outlook for U.S. growth to 2.5 percent in 2015, from April's 3.1 percent. The U.S. economy grew 2.4 percent in 2014.