There entire argument is based on the opinions of experts who only research and see their small part of the whole. NASA may be good at generating and interpreting satellite images of the poles or desert expansion but won't be fully knowlegable on the detailed effects on certain enviroments. Marine biologists will see the effect on ocean wildlife but not on the atmospheric changes. The list goes on. The main thing to remember is that the earth has huge corrective mechanisms for things such as global warming anyway. If the polar ice caps melt due to rising temperatures because of CO2 then there will be huge blooms of photosynthetic micro organisms which will subsequently redress the CO2 in the atmosphere and produce more oxygen. (accidental iron seeding of the southern oceans caused massive blooms just a couple of years ago)
Think of the earth as a giant version of the pond weed experiment you did in early high school whereby the 3 main ingredients of the photosythesis reaction were shown in a test tube.
Increase CO2 concentrations and you speed up the conversion of CO2 to O2 by photosynthesis.
Increase the temperature and you do the same.
Increase the number of photosynthetic organisms and you do the same.
The main issue is that we've been destroying the main mechanisms of photosynthesis for decades...namely the rainforests.
Now it turns out we can use 1 method as a double hit against climate change...Algae...Not only can it be used to convert large amounts of CO2 to O2 but it can also be used to create biofuel as a replacement for fossil fuels.
There's also some interesting additional aspects to the climate change argument. Why is it that the Mars "ice" caps are deteriorating at a similar rate to Earth's despite not having any human influence. Is it to do with the Mars equivalent of the Milankovitch cycles?
Personally I don't give a ****. My city is built on two big hills and so my house is hundreds of feet above sea level. We could use with better weather as well.
As comedian Frankie Boyle said "We Scots will sit on our mountain sides and watch the English drown whilst saying 'Archie, would ya like a bit o ma pineapple?'...'Na no thanks...Ah've got a coconut'.
France will become a desert...England will flood and Scotland will have tropical weather....Superb.
Actually the reality is the Britain will freeze if the Arctic cap melts as the influx of fresh water will cause the Gulf Stream to shut down and so the warm currents that flow to the UK via the north atlantic drift will stop and so we'll end up as cold as all the other countries on the same latitude (namely parts of Northern Canada, Siberia, Moscow etc)
****.