CO2 levels are altering the chemical makeup of human blood over time, and may lead to health problems down the road. | Credit ...

A new study suggests rising carbon-dioxide levels may be slowly changing human blood chemistry and could impact long term ...

The study, published in Air Quality, Atmosphere and Health, found that serum bicarbonate levels, a CO2-linked blood marker, rose by about 7 percent since 1999, mirroring atmospheric CO2 increases, ...

According to the fossil record, Earth's atmospheric CO 2 levels remained relatively stable for at least the 150,000-year history of Homo sapiens, hovering around 280 to 300 parts per million (ppm). In ...

What we breathe out becomes fuel for forests. But inside our own bodies, CO₂ has a secret life. It sparks chemical reactions, shapes metabolism, and may even act as a signaling molecule—and a new tool ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Brian Geurin's letter "Incorrect to call carbon dioxide a pollutant" (Aug. 26) misses the point. Does it matter whether carbon ...

Rising carbon dioxide levels are being detected within the human body, with new research warning a key blood marker for the gas could near its healthy limit within decades if current trends continue.