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Hypercapnia (from the Greek hyper, "above" or "too much" and kapnos, "smoke"), also known as hypercarbia and CO 2 retention, is a condition of abnormally elevated carbon dioxide (CO 2) levels in the blood. Carbon dioxide is a gaseous product of the body's metabolism and is normally expelled through the lungs.
Thus carbon dioxide has gradually accumulated in the atmosphere and, as of May 2022, its concentration is 50% above pre-industrial levels. [ 3 ] The extraction and burning of fossil fuels, releasing carbon that has been underground for many millions of years, has increased the atmospheric concentration of CO 2 .
Climate 101 is a Mashable series that answers provoking and salient questions about Earth’s warming climate. The last time CO2 levels were as high as today, ocean waters drowned the lands where ...
Atmospheric carbon dioxide (CO 2) concentrations from 1958 to 2023. The Keeling Curve is a graph of the annual variation and overall accumulation of carbon dioxide in the Earth's atmosphere based on continuous measurements taken at the Mauna Loa Observatory on the island of Hawaii from 1958 to the present day.
In the meantime, carbon dioxide levels are themselves increasing at record levels. The early-2024 rise in carbon dioxide concentrations was the highest in history, and the increase from 2022 to ...
Global carbon dioxide emissions from burning fossil fuels are set to hit a record high this year, exacerbating climate change and fuelling more destructive extreme weather, scientists said. The ...
In 2016, the global average temperature was already 1.1°C above pre-industrial levels. [15] According to the review of the scientific literature conducted by the Intergovernmental Panel on Climate Change (IPCC), carbon dioxide is the most important anthropogenic greenhouse gas by warming contribution. [16]
Global carbon dioxide emissions spiked to historic levels in 2021, offsetting the pandemic-induced decline from its previous year, according to a new report by the International Energy Agency (IEA).