Global warming is known as which effect?

Its a natural phenomenon the earth has been heating and cooling since the beginning of its existence ,global warming is not man made,scaremongering at its finest!

howdy , in the 70's it was supposed to be cooling, now it's supposed to be warming. Too many failed predictions to be considered reliable science.

howdy , I hope people wake up! Global warming is real!

Roger, true, but that happens over millions of years. Not decades like it's doing now.