The world is hotter than ever according to new temperature data. March, April, May and June set records, making 2010 the warmest year worldwide since record-keeping began in 1880, the National Oceanic and Atmospheric Administration says.

"It's part of an overall trend," says Jay Lawrimore, climate analysis chief at NOAA's National Climatic Data Center. "Global temperatures ... have been rising for the last 100-plus years. Much of the increase is due to increases in greenhouse gases."

There were exceptions: June was cooler than average across Scandinavia, southeastern China and the northwestern U.S., according to NOAA's report.


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