I&#x27;m not sure what you&#x27;re getting at. The earth is heating up, we know, because all the ice is melting. And that hasn&#x27;t happened for hundreds of centuries - long before people were a significant actor on this globe. What is in dispute? The cause, sure. That&#x27;s still very much an interesting subject. But the <i>fact</i> of the earth heating up is, yes, obvious.