News
NOAA: Greenhouse gas concentrations, global sea levels and ocean heat hit record highs in 2021
In a report released on Wednesday, the National Oceanic and Atmospheric Administration found that climate change continued to worsen in 2021, setting new records for greenhouse gas concentrations in the atmosphere that helped push sea levels and ocean heat content to record highs.
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.