The “can’t quite grasp the concept” set continues to argue that the cost of reducing greenhouse gas emissions to fight global warming is just too high.

So what’s the cost of building and maintaining a 3 to 10 meter (10 to 33 foot) dike around manhattan? Or the cost of moving millions of people inland from the Eastern US Seaboard? The cost of having Florida’s tourism industry wiped out?

These are just the economic effects. The ecological effects are orders of magnitude more severe.

Greenhouse gas emissions too expensive? It will probably be less expensive to find ways to reduce atmosperic greenhouse gases than it will to handle the effects of rising sea levels, and that’s just one of many devestating environmental changes that are coming our way if we don’t take action.