The global warming controversy basically deals with the public debate over whether global warming is occurring or not and how much has occurred in modern times. It also deals with the causes of global warming, its effects and whether any action should be taken to curb it and what might those actions be.
Among the scientists, there is a rather strong consensus that global surface temperatures have increased in recent decades which has been caused primarily by human-induced emissions of greenhouse gases.
Disputes over the vital scientific facts of global warming are more prevalent in the popular media than in the scientific world, where such issues are treated as resolved.
