News tagged with atmospheric oxygen

Fools' gold found to regulate oxygen

As sulfur cycles through Earth's atmosphere, oceans and land, it undergoes chemical changes that are often coupled to changes in other such elements as carbon and oxygen. Although this affects the concentration of free oxygen, ...

Jul 23, 2012
5 / 5 (3) 0 | with audio podcast

Solution to ancient rock puzzle posited

A superplume, or massive episode of volcanic eruptions that related to extensive melting of the Earth's mantle, could explain the puzzling reappearance of major iron formations long after the rise in atmospheric ...

Apr 27, 2012
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Avocado oil: The 'olive oil of the Americas'?

Atmospheric oxygen facilitated the evolution and complexity of terrestrial organisms, including human beings, because it allowed nutrients to be used more efficiently by those organisms, which in turn were able to generate ...

Apr 23, 2012
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When dinosaurs roamed a fiery landscape

The dinosaurs of the Cretaceous may have faced an unexpected hazard: fire! In a paper published online today, researchers from Royal Holloway University of London and The Field Museum of Natural History in Chicago have shown ...

Mar 29, 2012
5 / 5 (3) 0 | with audio podcast

Hazy shades of life on early Earth

A 'see-sawing' atmosphere over 2.5 billion years ago preceded the oxygenation of our planet and the development of complex life on Earth, a new study has shown.

Mar 18, 2012
4.7 / 5 (3) 0 | with audio podcast

Far-out photosynthesis

Photosynthesis maintains Earth's habitability for life as we know it, and shapes the way we search for habitable worlds around distant stars. Scientists have discovered a microbe that can use low-energy light ...

Mar 16, 2012
4.3 / 5 (7) 7 | with audio podcast