News tagged with ozone levels

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Detecting biomarkers on faraway planets

(Phys.org) —On Earth, life leaves telltale signals in the atmosphere. Photosynthesis is ultimately responsible for the high oxygen levels and the thick ozone layer. Microbes emit methane and nitrous oxide ...

Sep 10, 2013
4.8 / 5 (13) 5 | with audio podcast

Aquatic 'dead zones' contributing to climate change

The increased frequency and intensity of oxygen-deprived "dead zones" along the world's coasts can negatively impact environmental conditions in far more than just local waters. In the March 12 edition of the journal Science, Univer ...

Mar 11, 2010
3.3 / 5 (7) 5 | with audio podcast

A dimmer view of Earth

When Stanford climate scientist Christopher Field looks at visual feeds from a satellite monitoring deforestation in the Amazon basin, he sees images streaked with white lines devoid of data.

Sep 06, 2010
4.2 / 5 (5) 2