While most climatologists agree that humans are driving global warming -- literally, in some respects, because of our reliance on fossil fuels -- some of the most trusted names in the weather business don't buy it.
"I love the Earth and I want to come up with alternative energy sources. I want to protect the water and air," Coleman said in a presentation posted on YouTube. "But I know that the Earth is going to be just fine with burning fossil fuels for as long as they last."
"There isn't any climate crisis," he said. "It's totally manufactured."
Other television weathermen tend to doubt that man has anything to do with it. "To think that we could affect weather all that much is pretty arrogant," said CNN weather anchor Chad Myers on a broadcast. "Mother Nature is so big. I think we're going to die from a lack of fresh water or ocean acidification before we die of global warming."
The view is surprisingly common among television meteorologists -- the folks trusted every day to bring you the five-day forecast.
One of three weather forecasters believe climate change is "caused mostly by human activities," according to a recent study from George Mason University and the University of Texas at Austin. Out of those surveyed, one in four agreed with the statement, "Global warming is a scam."
All told, barely half the forecasters surveyed actually believe in the science of climate change.
To find out why, "Nightline" turned to one of the most prominent doubters, AccuWeather's Joe Bastardi, who has been a frequent guest on "The O'Reilly Factor," weighing in on the highly-politicized climate change debate.
"Here's what I'm telling people," he said. "Let's see what happens over the next 20 to 30 years. To me, it's a big forecast and the forecast is based on the idea that there are things turning around now, we have the way now to actually measure it. The Earth is going to cool back to where it was in the late '70s by 2030. That's my forecast ..."
Many climatologists, who study weather conditions averaged over time, take issue with Bastardi's analogy of climate change as a "big forecast."
"I think you've got to be careful separating weather with climate," said Heidi Cullen, a research scientist and climatologist at Climate Central, a non-profit in Princeton, N.J., that tries to explain the science of climate change to the public.
Cullen concedes Bastardi is correct that today's instruments are more accurate for measuring nuances in temperature data, but she says the data merely confirm what scientists have long been predicting.
"If you ask a climate scientist, they would say, we can't afford to wait 30 years to do anything," Cullen said.
Also, she notes, there's a fundamental difference between predicting the weather and understanding climate change.
"This is a forecast that we can ultimately change. Your standard five-day forecast is take an umbrella," she said. "With climate change, it's literally to say, if we continue to do the things we're doing this is the forecast we will inherit."