News tagged with atmospheric oxygen

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 ...

Feb 19, 2014
4.5 / 5 (11) 0

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 ...

Dec 11, 2013
4.8 / 5 (4) 0

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.

Nov 25, 2013
5 / 5 (7) 2 | with audio podcast

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 ...

Jun 21, 2013
4.5 / 5 (10) 7 | with audio podcast

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 ...

Jun 10, 2013
2.5 / 5 (6) 0 | with audio podcast

High-efficiency zinc-air battery developed

Stanford University scientists have developed an advanced zinc-air battery with higher catalytic activity and durability than similar batteries made with costly platinum and iridium catalysts. The results, ...

May 29, 2013
4.6 / 5 (32) 11 | with audio podcast

Taking X-rays of CO2

As CO2 levels in the Earth's atmosphere top 400 parts per million, options such as storing the greenhouse gas in porous sandstone rock formations found in abundance on the sea floor are of increasing interest. ...

May 14, 2013
3 / 5 (4) 0

Robot gliders roam seas

(Phys.org) —Once the robotic gliders scour the ocean searching for potential harm to sea life, the data is sent to David Caron, professor of biological sciences in USC Dornsife, and other marine biologists. ...

May 03, 2013
3.8 / 5 (4) 0