True...the earth has been warming ever since the last ice age. Abnormal warming is a theory, a bad one at that.
"True...the earth has been warming ever since the last ice age. Abnormal warming is a theory, a bad one at that."
Actually the temperature dropped during portions of the 1800's, a time when greenhouse gasses were rapidly increasing.
People who claim global warming is human caused tend to overlook/ignore this.