In March, Buck appeared on The Aaron Harber show, a weekly Denver political discussion program. Harber asked about global warming, and Buck offered his take.
"I'll tell you, I have looked at global warming, now climate change, from both sides. While I think the earth is warming, I don't think that man-made causes are the primary factor." Buck said. "I am one of those people that Al Gore refers to as a skeptic."
The host interjected that Gore calls such people "deniers."
"Deniers?" Buck said. "Ok, I'm one of those folks."
Also in the interview, Buck aired his views on health care, drawing a distinction between access to "health insurance" and access to "heatlh care," suggesting that reform advocates were just getting hung up on the idea of insurance.
"We have emergency rooms. We have charitable opportunities for folks," Buck said. "I don't know how many people truly don't have health care in this country. I think the other side of the debate consistently focuses on insurance, and I think it's a red herring."
"I don't think that insurance is required. And I think it really starts to border on unconstitutional when we talk about the government requiring people to have insurance," he added. Churches and clinics can cover the cost of people's health care, he said, relying on what he called "compassion at a community level."
The TPM Poll Average shows Buck leading Democratic Sen. Michael Bennet 45.7-42.8.
Watch (global warming gets discussed at the 24:00 mark):