Oxygen is abundant on Earth. It's actually the third most plentiful element in the entire universe, behind hydrogen and helium. Yet the further you get from our home planet, the less oxygen there will ...

A bizarre new discovery in the deep Pacific Ocean has scientists scratching their heads, and for good reason. Far beneath the ...

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Potato-sized lumps of metal on the seafloor are generating oxygen, a new study has found. Scientists previously believed that oxygen was strictly formed as a byproduct of photosynthesizing plants.

Sensor readings seemed to show that oxygen was being made on the seabed 4,000 meters (about 13,100 feet) below the surface, where no light can penetrate. The same thing happened on three subsequent ...