Add Yahoo as a preferred source to see more of our stories on Google. An observatory high on Hawaii's Mauna Loa volcano that measures carbon dioxide in the atmosphere has reported its highest ever ...

An observatory high on Hawaii's Mauna Loa volcano that measures carbon dioxide in the atmosphere has reported its highest ever seasonal peak concentration of the greenhouse gas. For the first time, ...

The longer you hold your breath, the more a desperate pressure in your chest grows — this is what scientists call “air hunger ...

Understanding your CO2 blood test results Your CO2 blood test is more than just a number—it reflects how well your body is balancing acid and base, and how your lungs and kidneys are working together.