News tagged with biosphere 2

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A new ocean for the desert

As I let the air out of my buoyancy vest and slip under the water of the University of Arizona's Biosphere 2 ocean, I hear a steady hum reminding me of the machinery working behind the scenes to filter the ...

Apr 01, 2014 5 / 5 (1) 0

Four degree rise will end vegetation 'carbon sink'

Latest climate and biosphere modelling suggests that the length of time carbon remains in vegetation during the global carbon cycle - known as 'residence time' - is the key "uncertainty" in predicting how Earth's terrestrial ...

Dec 16, 2013 3.6 / 5 (19) 28 | with audio podcast

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

List of search results for biosphere 2