Christians can believe in anything for which there is evidence. In my view it is many atheists who must believe in man-caused global warming in order to fulfill a void created by their non-belief that creates a vacuum of despair over mankind seemingly having no noble purpose - so they go looking for some way to create one, such as imagining we have the power to both destroy or save the planet based on whether we hear our homes with oil or with solar panels.
People like this guy sound more like Muslims than Christians.