Thank you.   I would say the current ongoing holocaust of the planet and all its life is the issue of the world.   Nothing can compare to what is occurring and what people face in the near future and beyond.   There is a qualitative difference in that even though warming the planet to extinction has its villains as evil as any,  all the people now suffering and dying don't have to face the horror of people exterminating of people, but many do.   They are dying, however, and starving from drought and other AGW effects. 

What can one say, however, about the fact that those who deny the murder of the entire planet are everywhere?   They don't care about the suffering and the dying that is occurring.  They don't read the science, but they do dismiss facts through specious logic.   Their hearts are dead along with their minds.   I can barely stand to read the comments because of it.   It's just disturbing.  Evil is ordinary.