The basic facts are (a)short term warming coming out of a little ice age which was preceded by a period of warming much greater than the current levels, (b)long term return to serious ice ages, (c) absolute non-compliance of observed warming trends with current models, (d) lots of fear mongering.
A couple of other basic facts: Humans are adding gases to the atmosphere that affect Earth's radiation budget at an unprecedented rate (which makes modeling the effects of such additions very uncertain), and the Earth's climate has warmed by about 0.6 degrees C in the past century, with some observable effects on climate and ecological systems.