For years on death row, notorious serial killer Ted Bundy wrote his cousin Edna Martin. Now, she’s revealing the letters—and ...

Find out more about the chilling cases featured in part two of season six of Oxygen's Buried in the Backyard, premiering Feb.

Microscopic ocean algae produce a huge share of Earth’s oxygen—but they need iron to do it. New field research shows that ...

Spectacular clouds swirl across the surface of Jupiter. These clouds contain water, just like Earth's, but are much denser on ...

Jupiter is the largest planet in the Solar System, a gas giant that could fit over 1,000 Earths inside. It is a phenomenally ...

When oxygen disappears, most fish suffocate. This one ferments its own metabolism and waits months for spring beneath frozen ...

Research reveals when and why ancient tropical seas transitioned from oxygen oases to marine dead zones, providing clues to ...

Pulse oximeters use light to measure how much oxygen is in a person’s blood. For most people, a normal pulse oximeter reading is between 95% and 100%, researchers said in background notes. Readings ...