| Angel_DwK said: when does he mention the fact that the same scientists that predict global warming predicted global cooling for the exact same reasons in the 70s.. When does he ever mention that water vapor is the most abundant green house gas and that carbon dioxide is actually a trace gas and humans are only responsible for .02% of that.. When does he mention that our planet has gone through radical climate before we were even here and will continue to do so long after were gone I HATE him... |
1. There was never scientific consensus on global cooling. It was not a serious idea then. Global cooling due to manmade aerosols does exist, by the way, it's just thatit is much less of an effect than anthropogenic warming.
2. The level of water vapour is basically constant and life on Earth has adapted to this stable temperature. The problem with climate change is not the magnitude of the temperature but the pace of change: too fast and life can't adapt. So the problem is not high levels of greenhouse gases but rapidly increasing quantities, and CO2 is doing precisely that. Humans are responsible for most of the CO2 increase (not the stuff that was already there). So therefore humans are responsible for most of the problem.
3. Yes. But as I said above the problem is the pace of change, and it is happening far faster than any time in Earth's history. The consequences of climate change are not that Earth itself will be damaged but that many species will not successfuly adapt and will become extinct or populations reduced.
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Climate change is not a threat to Earth. It is a threat to our current way of life. Humans will certainly survive, but probably not 6 billion of us and probably not with the Western lifestyle. The best thing that could possibly happen is that the oil runs out, soon. That would force research into alternatives like fusion, geothermal and more efficient solar.
