Carbon dioxide - Wikipedia
Carbon dioxide is a chemical compound with the chemical formula CO2. It is made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It …
CO2 blood test: Purpose, typical range, and results
Oct 1, 2024 · Doctors use a simple blood test to determine typical or atypical CO2 levels in the body. Learn about the CO2 blood test, and how to interpret the results, here.
What is Carbon dioxide (CO₂)? - myclimate
Feb 25, 2025 · What is Carbon dioxide (CO₂)? Carbon dioxide (CO₂) is a colourless and odourless gas that is a natural component of the air and part of the global carbon cycle. It …
Carbon dioxide | Definition, Formula, Uses, & Facts | Britannica
Nov 27, 2025 · carbon dioxide, (CO 2), a colourless gas having a faint sharp odour and a sour taste.
What is Carbon Dioxide? How it affects your health & why you ...
Carbon dioxide is a natural greenhouse gas, commonly produced by the air we exhale. At higher levels, CO2 affects productivity, sleep and infectious disease transmission. Learn more on …
Carbon Dioxide - Earth Indicator - NASA Science
Sep 25, 2025 · Carbon dioxide (CO2) is an important greenhouse gas. Greenhouse gases trap the heat from sunlight, warming the planet. Without any greenhouse gases, Earth would be too …
What is carbon dioxide (CO2)? A detailed explanation.
Sep 18, 2025 · Carbon dioxide (CO2) is a colorless, odorless gas essential to life—and a powerful clue about indoor air quality. Outdoors, CO2 continues to climb as we burn fossil fuels; …
Understanding the basics of carbon dioxide - NOAA Research
Jun 28, 2024 · Carbon dioxide is a gas produced when an organic carbon compound (such as wood) or fossilized organic matter (such as coal, oil, or natural gas) is burned in the presence …
CO₂ and Greenhouse Gas Emissions - Our World in Data
Many of us want an overview of where our country stands on CO₂ and other greenhouse gas emissions. Are they increasing or decreasing? How do levels compare to other countries? This …
CO2 percentage used to mislead on global warming | Fact check
Feb 21, 2024 · Scientists said the relatively small amount of CO2 in the atmosphere does not mean climate change isn't happening.