Mashable: This year is almost certain to become the warmest year the planet has had since instrument records began, and very likely for at least 4,000 years before that.
Even though November was tied with 2008 as only the seventh-warmest such month on record, global average surface temperatures are 1.17 degrees Fahrenheit above average. That makes it virtually certain that the year will still eclipse 2005 and 1998 -- the previous record holders -- to win the crown.
According to Deke Arndt, chief of the...