What’s the main idea of the news item? [originaltext] (2)This year is on tra

(2)This year is on track to be one of the hottest, if not the hottest, year on record, a UN agency reported Wednesday, citing preliminary estimates. The estimates were released by the World Meteorological Organization to coincide with annual climate change negotiations taking place in Lima, Peru.
    "What we saw in 2014 is consistent with what we expect from a changing climate. Record-breaking heat combined with rainstorm and floods destroyed livelihoods and ruined lives.
     (3)According to the organization, estimates for this year show the average air temperature over land and sea for January-October was about 0.57 degrees Centigrade above the average of 14.00 degrees C for the 1961-1990 reference period, and 0.09 degrees C above the average for the past 10 years.
    If the rest of 2014 plays out as expected, this year will be the hottest on record, ahead of 2010, 2005 and 1998.