This. They've started saying things like, "The earth goes through natural cycles. How do we know this isn't normal? There weren't any humans around to cause the

This. They've started saying things like, "The earth goes through natural cycles. How do we know this isn't normal? There weren't any humans around to cause the last ice age." Honestly I can't event say I completely disagree with that logic. But for me I'm not willing to risk being wrong about climate change.