It's official: Last year was the world's second hottest on record, and 2010-2019 was the hottest decade ever recorded.
Why it matters: The findings, published in two separate reports by NOAA and the British weather service the Met Office Wednesday, are in line with those of research group Berkeley Earth, revealed at the start of the year. It's yet more evidence of the long-term warming trend that stems from human-induced greenhouse gas emissions.
