“On the global warming alarmists, anyone who actually points to the evidence that disproves their apocalyptical claims, they don’t engage in reasoned debate. What do they do? They scream, ‘You’re a denier.’ They brand you a heretic. Today, the global warming alarmists are the equivalent of the flat-Earthers. It used to be that it is accepted scientific wisdom the Earth is flat, and this heretic named Galileo was branded a denier,” Cruz said.