September 2014 was the warmest September since records began in 1880, new data from NASA shows.
May and August were also record-breaking warm months, according to NASA.
Further, the last six months were the warmest such time period on record.
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The current trends could put 2014 on track to be the warmest year on record.
NASA and the NOAA's National Climatic Data Center have noted that 9 of the 10 warmest years have happened since 2000.
Last month, just ahead of the historic People's Climate March, the World Meteorological Organization stated that atmospheric levels of CO2 are at record levels and reiterated that "we are running out of time" to act on the climate crisis.