We are on the natural rise after a natural ice period. Just check long term temperature curves and stop looking short term, making it look like there has ever been the same average temperature on earth.
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“Now that we have succeeded in capturing the natural climate variability, we can see that the projected anthropogenic warming will be much greater than that.”
"For the past 3 million years, Earth’s climate has been in an Icehouse state characterized by alternating glacial and interglacial periods. Modern humans evolved during this time, but greenhouse gas emissions and other human activities are now driving the planet toward the Warmhouse and Hothouse climate states not seen since the Eocene epoch, which ended about 34 million years ago."
Please read the article you're linking. Unless this is an awkwardly executed joke that I'm missing?