News tagged with atmospheric oxygen

Plasma tool for destroying cancer cells

Plasma medicine is a new and rapidly developing area of medical technology. Specifically, understanding the interaction of so-called atmospheric pressure plasma jets with biological tissues could help to ...

dateMar 25, 2014 in Plasma Physics
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The ups and downs of early atmospheric oxygen

A team of biogeochemists at the University of California, Riverside, give us a nontraditional way of thinking about the earliest accumulation of oxygen in the atmosphere, arguably the most important biological ...

dateFeb 19, 2014 in Earth Sciences
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The rise and fall of oxygen

How long has Earth's atmosphere included oxygen? A recent paper suggests low levels of oxygen appeared in the atmosphere approximately 2.95 billion years ago. That's about 550 million years earlier than p ...

dateDec 11, 2013 in Earth Sciences
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Could dying planets harbor life?

If life does exist anywhere else in the universe, it may only be fleeting. Now scientists are researching how signs of life might look on dying planets.

dateNov 25, 2013 in Astronomy
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A designer enzyme for alternative energy

(Phys.org) —Imagine pulling energy out of thin air. Yi Lu and his colleagues are on that path, in a quest to find alternatives to fossil fuels. The team has designed an enzyme that can harvest the energy ...

dateJun 21, 2013 in Biochemistry
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Testing artificial photosynthesis

(Phys.org) —With the daily mean concentrations of atmospheric carbon dioxide having reached 400 parts-per-million for the first time in human history, the need for carbon-neutral alternatives to fossil ...

dateJun 10, 2013 in Materials Science
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