There's definitely been a change and it's pretty much correlated to the amount of humans inhabiting this planet. How much and how are the questions up for debate.
I think it would be rather arrogant of us to think that we are the sole cause of any kind of climate change. Yes, I believe that as the caretakers of the earth, in the past, we have done a pretty crappy job, but it seems we are getting better in that area. I don't believe we have any significant control at all of whats going on.
I say we are one factor yes...but there are other factors as well.
This is such a tough topic. I found a well written article by NASA that quantifies some of the energies involved. What strikes me most is the quote of average watts per square meter arriving at the TOP of the Earths atmosphere.
"Averaged over the entire planet, the amount of sunlight arriving at the top of Earth’s atmosphere is only one-fourth of the total solar irradiance, or approximately 340 watts per square meter."
http://earthobservatory.nasa.gov/Featur … /page2.php
I would have thought the figure to be much greater.
I really think humans caused global warming/climate change because mans activities are largely responsible for it.
That is an awesome example of circular logic. Can I use it as an example in the future?
One question: what is the temperature of the Earth supposed to be?
I've always wondered why we don't try to recreate the biosphere of the Carboniferous period. Surely the flora and fauna of that era deserve to be saved.
by Randy Godwin 5 years ago
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by savvydating 5 hours ago
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by Sychophantastic 8 years ago
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by T. Clifton 9 years ago
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by Scott Belford 6 years ago
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by SparklingJewel 6 years ago
from the patriotpost:::a new study out of England, where scientists are relying not on computer-generated models of the Earth, but the real thing.Wolfgang Knorr of the University of Bristol's Department of Earth Sciences has found that in the past 160 years the Earth's absorption of carbon dioxide...
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