"A record drought in northern Mexico has prompted warnings that the region's climate may have changed for good."

"Some of the weather extremes bedeviling people around the world have become far more likely because of human-induced global warming, researchers reported on Tuesday. Yet they ruled it out as a cause of last year’s devastating floods in Thailand, one of the most striking weather events of recent years."

"As far back as records go (1895), never has the U.S. strung together 12 straight months warmer than May 2011 to April 2012 according to new data released today by NOAA’s National Climatic Data Center (NCDC)."

"Long respected by his professional peers around the world, [scientist Michael] Mann became more widely known as one of the targets of the so-called and now discredited 'climategate scandal,' involving hacked emails of several prominent climate scientists. Mann's science and professional conduct (and that of others so targeted) have been repeatedly exonerated by independent professional review."

"According to Professor Ian Simmonds of the University of Melbourne, it is a combination of the melting sea ice and the atmospheric warming that is happening globally that is responsible for the high rate of warming in the Arctic."

"KANSAS CITY, Mo. — An unrelenting and record-setting heat wave peaked this weekend, beating a broad swath of states into sweaty submission, with above-normal triple-digit temperatures stretching from St. Louis to Washington."

"The June 29 derecho, which caused widespread damage in Washington, D.C. blossomed to full fury in a record hot environment. Could the heat added to the atmosphere from manmade greenhouse gases have provided extra fuel to this explosive storm?

The amount of energy available to this storm was extreme and, wundergound weather historian Chris Burt called the number of all-time heat records set around the time 'especially extraordinary.'

"More than 2,000 temperature records have been matched or broken in the past week as a brutal heat wave baked much of the United States, and June saw more than 3,200 records topped, the National Oceanic and Atmospheric Administration (NOAA) said Monday."

"The historic Texas drought caused the Ogallala Aquifer to experience its largest decline in 25 years across a large swath of the Texas Panhandle, new numbers from a water district show."

"HARTFORD CITY, Ind. -- Across a wide stretch of the Midwest, sweltering temperatures and a lack of rain are threatening what had been expected to be the nation’s largest corn crop in generations."