From the online Urban Dictionary :
"Warmer Porn" is slang for disgusting or repulsive propaganda used by
Warmers - fanatic believers in global warming - to try to get people to
either fall for their belief set, or to intimidate them into silence.
Often children are used in such portrayals as the victim of the adult
world's excessive carbon emissions, in an effort to create guilt. Dead
cities and landscapes, cities under water, people starving in third
world countries, rabbits crying, dogs drowning, polar bears falling from
the sky into the middle of cities are just a few of the examples of
Warmer Porn.