> solar and wind are not options
No, I'm not saying that. I'm saying: 100% solar/wind are not an option.
> radioactive contamination
The photo shows nuclear waste storage in Switzerland. There's a man walking around in the middle. And there are ~200 nuclear reactors running in the world for the last half century without any contamination.
> killing mankind by CO2
If we don't limit CO2 emissions within a few decades yes, this will be true disaster.