The globally-averaged temperature for 2012 marked the 10th warmest year since record keeping began in 1880. It also marked the 36th consecutive year with a global temperature above the 20th century average. The last below-average annual temperature was 1976. Including 2012, all 12 years to date in the 21st century (2001-2012) rank among the 14 warmest in the 133-year period of record. Only one year during the 20th century -- 1998 -- was warmer than 2012....