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Seals may be able to directly sense oxygen levels in their blood, an ability humans don't possess. A Scottish study reveals ...

The model tracks the oxygen "turnover" — how much oxygen is produced and consumed — in inland waters since 1900. The ...

More than 80 percent of the 15,535 lakes they examined now have depleted oxygen levels. From 2003 to 2023, 85 percent of these lakes experienced a steady increase in the number of heatwave days ...

VO₂ max refers to the maximum amount of oxygen your body can absorb and use during exercise. It measures your aerobic fitness levels. If you’re looking to improve your aerobic fitness ...