News
2022 was the warmest La Niña year on record. Scientists say this year will be warmer
Twin reports released Thursday by NASA and the National Oceanic and Atmospheric Administration found the last nine years were the hottest nine on record, with 2022 being the warmest La Niña year ever recorded.
Related Knowledge Center: Climate science
State of Play
What began as a theory in the 1890s — that industrial emissions of carbon dioxide could increase global temperatures — had progressed to a scientific fact a century later. Scientists across a range of disciplines are studying the impact of the still-growing concentration of carbon dioxide and other so-called “greenhouse gases” in the atmosphere as they call for industrial and governmental policies to slow, then halt, the warming of the planet.