One in three US adults don’t get enough iron, which has a major effect on getting oxygen around your body. Find out how this ...

The most accurate way to measure your VO2 max is to do a ramp test while wearing a mask that measures the oxygen and carbon dioxide in the air you inhale and exhale. A ramp test usually involves ...

An arterial blood gas (ABG) test involves taking a blood sample from an artery in your wrist, arm, or groin. ABG test results show how well your lungs move oxygen and carbon dioxide in and out of your ...

During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by ...

close respirationA chemical reaction that occurs in the mitochondria of cells in which glucose and oxygen react to produce carbon dioxide and water, releasing energy. Photosynthesis is one of the ...

The second article in our series investigates why it is so hard to implement carbon capture in power generation and industry.

That splits the water molecules into oxygen and hydrogen ... caused even more carbon dioxide from the atmosphere to dissolve into the water. Captura plans to run a final test next year in Hawai ...