The guidelines for rating [the] abstracts show only the highest rating value blames the majority of global warming on humans. No other rating says how much humans contribute to global warming. The only time an abstract is rated as saying how much humans contribute to global warming is if it mentions:
that human activity is a dominant influence or has caused most of recent climate change (>50%).
If we use the system’s search feature for abstracts that meet this requirement, we get 65 results. That is 65, out of the 12,000+ examined abstracts. Not only is that value incredibly small, it is smaller than another value listed in the paper:
Reject AGW 0.7% (78)
Remembering AGW stands for anthropogenic global warming, or global warming caused by humans, take a minute to let that sink in. This study done by John Cook and others, praised by the President of the United States, found more scientific publications whose abstracts reject global warming than say humans are primarily to blame for it.