Tags Oxygen

Tag: Oxygen

Ocean oxygen is key to animal evolution

Scientists have long been puzzled about why complex life forms began to appear some 550 million years ago – three billion years after life...

Ancient air pockets changing the history of Earth’s oxygen

Ancient air trapped in rock salt for 813 million years is changing the timeline of atmospheric changes and life on Earth. Defining past atmospheric compositions...

Buried oxygen rose to the occasion as Earth’s early atmosphere formed

Oxygen buried deep underground in minerals may have prompted the churning of Earth's rocky mantle billions of years ago and helped transform the planet's...

ChemCam findings hint at oxygen-rich past on Mars

The discovery of manganese oxides in Martian rocks might tell us that the Red Planet was once more Earth-like than previously believed. A new...

Can animals thrive without oxygen?

In 2010, a research team garnered attention when it published evidence of finding the first animals living in permanently anoxic conditions at the bottom...

Enough oxygen on Earth long before animals rose

Oxygen is crucial for the existence of animals on Earth. But, an increase in oxygen did not apparently lead to the rise of the...

Smothered oceans: Extreme oxygen loss in oceans accompanied past global climate...

Seafloor sediment cores reveal abrupt, extensive loss of oxygen in the ocean when ice sheets melted roughly 10,000-17,000 years ago, according to a study...

Iron toxicity for cyanobacteria delayed oxygen accumulation in early Earth’s atmosphere

Three billion years ago, Earth's atmosphere contained less than 0.0001 percent oxygen. Today's atmosphere has around 20 percent oxygen -- and that is due...

MOST POPULAR

MORE ARTICLES