It is thought that the medieval warm period was caused by an increase in solar radiation and a decrease in volcanic activity. It is thought that the current warm period is caused by anthropogenic carbon emissions.
They both do and don't. 97% of scientists DO believe that humans have at least SOME impact. 3% believe humans have Zero impact.
But that doesn't say anything, anything at all. It's a propaganda piece. 97% of scientists COULD believe that warming is 99% natural, and that stat would be technically correct. It simply doesnt have any meaning.
The question that is rarely asked or claimed is what percentage is natural and what percentage is anthropogenic?