1: This took longer than I wanted it to, because I have to find the papers about increase in temperature, increase in carbon and the correlation then (That's why I wanted to restrict it)

Increase in temperature:
doi:10.1029/2018JD029522
https://doi.org/10.1126/science.1228026
https://doi.org/10.1073/pnas.0606291103

Increase in carbon:
https://doi.org/10.1073/pnas.0702737104
https://doi.org/10.1016/j.enpol.2007.07.001
https://doi.org/10.1073/pnas.0812721106
https://doi.org/10.1038/ngeo689

Is it the sun?
doi: 10.1029/2002JA009753
https://doi.org/10.1029/2002JA009753
https://doi.org/10.1088/1748-9326/4/1/014006
https://doi.org/10.1098/rspa.2007.0348

For even more information there are these too (these are from the video):
These are mostly on the correlation of co2 and temperature
https://doi.org/10.1016/j.gca.2005.11.031
http://ruby.fgcu.edu/courses/twimberley/enviropol/EnviroPhilo/Phanerozoic.pdf
https://doi.org/10.1130/0091-7613(1994)022<0295:BAIEFA>2.3.CO;2
https://doi.org/10.1029/94JD02521
https://doi.org/10.1130/0091-7613(1997)025<0447:AAPCTF>2.3.CO;2
https://doi.org/10.1016/S0031-0182(99)00046-2
https://doi.org/10.1130/G21219.1
http://adsabs.harvard.edu/full/2005ESASP.560...19U

How much is man made:
https://doi.org/10.1175/1520-0442(2004)017<3721:CONAAF>2.0.CO;2
https://doi.org/10.1175/JCLI3966.1
https://doi.org/10.1073/pnas.1003187107

On scientific consensus in the topic (if climate change is mainly man made):
https://iopscience.iop.org/article/10.1088/1748-9326/8/2/024024
https://iopscience.iop.org/article/10.1088/1748-9326/11/4/048002

Now, how much percent exactly climate change is man made varies from paper to paper. But most of them agree that the majority of it is man made.

I give you time to respond to this while I work on 2 and 3.

Again for 5 and 6.

1. This is not so easy to assess, since we can barely forecast how the economy would behave even without climate change, co2 taxes or similar. There are too many variables in this.
   But, as I will show in 3) The cost of not doing anything, on the long term will be always lower than the cost of doing something.

2. In the best case scenario we will not decrease, we will stabelize the temperature (I will give a paper for that thing with 2).