Levels of molybdenum in soil show that hydrogen sulfide gas wiped out nearly half of all marine life 530 million years ago.

For the first time, astronomers have found molecular oxygen — the same gas humans need to breathe — in a galaxy outside the Milky Way. Oxygen is the third most common element in the cosmos, after ...

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

Scientists have found that molecular oxygen around comet 67P is not produced on its surface, as some suggested, but may be from its body. The European Space Agency's Rosetta spacecraft escorted comet ...

Despite being the third most abundant element in the Universe, molecular oxygen, or O₂, is relatively rare off Earth. That's why it raised a few eyebrows at ESA when the space agency's Rosetta ...

I think about oxygen a lot more than I used to. This is because I am studying a chemical defense that turns ordinary oxygen, the same old stuff we obtain from breathing air – the same stuff that is ...

Traditional techniques of converting fossil fuels for heat and power generation and chemical production increase the carbon ...