News tagged with oxygen concentration

Oxygen fuels the fires of time

Variations in the Earth's atmospheric oxygen levels are thought to be closely linked to the evolution of life, with strong feedbacks between uni- and multicellular life and oxygen. Over the past 400 million years the level ...

Aug 02, 2010
4.8 / 5 (14) 29 | with audio podcast

Students design cars the get 1000 MPG+

(PhysOrg.com) -- When you think about the design team for an ultra-fuel efficient vehicle, on that can get more than one thousand miles per gallon of gas; you probably picture a professional design lab outfitted ...

Jun 27, 2011 weblog
4.8 / 5 (9) 17 | with audio podcast

The oldest evidence of bioturbation on Earth

The Ediacaran Period, an interval in Earth's history after the Snowball Earth glaciations but before the Cambrian radiations, marks the introduction of complex macroscopic organisms synchronously in unrelated groups. It has ...

Mar 20, 2012
5 / 5 (2) 1