Comment by lucb1e

It's probably because "+1" and "yup" comments are discouraged, so the people that immediately feel like they have something to add are the ones that think the article is not telling the whole story. At least, that's my guess. I would expect that a representative poll (https://news.ycombinator.com/newpoll might be a starting point) would show an overwhelming majority of readers/commenters does think global warming is real and caused by human emissions.