A casual survey reveals that approximately half of the interent is populated with porn, and another quarter with trolls. The rest is mostly Huffington Post reblogs. But here's the thing about those trolls back there—they skewed my casual survey, just by being louder and more obnoxious than everybody else.There are obviously all sorts of trolls, but as a reporter who's covered global warming for five years now, I can tell you that there are none more unpleasant than climate deniers. They are religious in their dedication to proving that global warming is a hoax concocted by Al Gore and the UN to initiate a New World Order wherein flourescent lightbulbs are foisted on an unwitting population.They leave long, venomous rebuttals on blog posts, they harass you on Twitter, they take to the YouTube comment section with the zeal of Kansan pro-lifers. There's no global warming, there's global cooling. There's warming, but it's sunspots. Carbon dioxide is good for plants. Al Gore has a big expensive house and he eats steak and jets around the world and will get rich off global warming. Also, Al Gore.But the strangest thing about these people is that they are actually human people, almost always men, who choose to spend their time in this fashion.Hoyt Connell is one such man. After the good folks at the Climate Desk had endured years of his social media-fied derision, they decided that, instead of ignoring him or harassing him back, they'd interview him. So they did. And what followed is interesting on multiple levels—it sheds a little light on why people troll, as well as why people choose to deny science.