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13:47: Par CO2
As the sun has matured over the past 4.5 billion years, it has become both brighter and hotter, increasing the amount of solar radiation received by Earth, along with surface temperatures. Earth has coped by reducing the amount of carbon dioxide in the atmosphere, thus reducing the warming effect. (Despite current concerns about rising carbon dioxide levels triggering detrimental climate change, the pressure of carbon dioxide in the atmosphere has dropped some 2,000-fold over the past 3.5 billion years; modern, man-made increases in atmospheric carbon dioxide offset a fraction of this overall decrease.)

The problem, says Joseph L. Kirschvink, the Nico and Marilyn Van Wingen Professor of Geobiology at Caltech and a coauthor of the PNAS paper, is that "we're nearing the point where there's not enough carbon dioxide left to regulate temperatures following the same procedures."
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From:[info]petrovichs
Date:15. Jūnijs 2009 - 14:11
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Opā! Tas bi negaidīti.
From:[info]
Date:15. Jūnijs 2009 - 14:26
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es tomēr bišķi nesapratu iespējamo seku variantu.
tb - zeme atbrīvojas no CO2, lai mums nebūtu tik karsti. finālā viss co2 evaporē, un karsti ir tik un tā? kā tad tā, zemļa proščitalasj.

bet jā, vispār tas nostiprina manu pēdējā laika pārliecību, ka cilvēki, piesārņošanu neskaitot, ar savām darbībām fundamentālas lietas Zemes norisēs ietekmēt nespēj.
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