CO2 levels are altering the chemical makeup of human blood over time, and may lead to health problems down the road. | Credit ...
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 ...
A new study suggests rising carbon-dioxide levels may be slowly changing human blood chemistry and could impact long term ...
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