Air bubbles in Antarctic ice suggest that glacial erosion caused atmospheric oxygen levels to dip over the past 800,000 years.

Blood transfusions save lives, but there's short supply. What if transfusions don't always require blood? New research indicates an alternative.

Blood transfusions save lives, but there's short supply. What if transfusions don't always require blood? New research indicates an alternative.

As the ocean warms, oxygen concentrations go down. Fish are already moving into shallower waters, new research indicates.

Erupting volcanoes, and not a geologic or chemical process, may have led to the first puff of oxygen in the atmopshere of the early Earth.

A trove of fossils from the Yukon sheds light on the time when land plants and complex animals first evolved on Earth.

A wireless device smaller than a ladybug could help doctors monitor tissue oxygen in transplanted organs and provide an early warning of transplant failure.

An analysis of 16 previous studies indicates that giving supplemental oxygen to mom during childbirth doesn't benefit the baby.

Collecting sticky stuff from areas of the ocean that have no oxygen shed light on how these zones trap carbon in sediment and rocks.

An electrolysis system can pull oxygen and fuel from briny water, just like the H2O on Mars. The tech also opens up oceans as a fuel source here on Earth.