1 00:00:00,020 --> 00:00:04,070 Earth just experienced the warmest year on record, again. 2 00:00:04,070 --> 00:00:08,200 3 00:00:08,200 --> 00:00:12,220 4 00:00:12,220 --> 00:00:16,280 2016 was the third year in a row with record-high surface temperature, 5 00:00:16,280 --> 00:00:20,460 6 00:00:20,460 --> 00:00:24,510 part of a decades-long warming trend. 7 00:00:24,510 --> 00:00:28,620 8 00:00:28,620 --> 00:00:32,740 NASA scientists track global temperature changes 9 00:00:32,740 --> 00:00:36,770 10 00:00:36,770 --> 00:00:40,860 to better understand Earth’s changing climate. 11 00:00:40,860 --> 00:00:44,900 12 00:00:44,900 --> 00:00:48,782