The truth or falsity of a statement is decided by the positive or negative consequences of it.
If global warming is occurring and is caused by humans, then we are obligated to do something to stop or slow it.
The most effective way to do so is for businesses to cut down on carbon emissions.
The short term costs of cutting carbon emissions would be economically devastating.
Q.E.D: Global Warming is either not occurring, not caused by humans, or both.