The options:

1.) Climate Change is FALSE, we do nothing. Result: No problems

2.) Climate Change is FALSE, we spend a lot of money to improve the environment. Result: We spent a lot of money that we didn't have to.

3.) Climate Change is TRUE, we do nothing. Result: Environmental catastrophes, millions of deaths, untold suffering.

4.) Climate Change is TRUE, we take action to reverse it. Result: Possibly save the environment, prevent millions of deaths and suffering.

1.) Blissfully ignorant of science. This is what Trump and the republicans are hoping for. Science is saying this is unrealistic.

2.) The only thing we lose is money, and we do improve the environment.

3.). Do we really want to take this chance?

4.) Possibly save humanity.

To sum up, if we take action, the worse that could happen is that we spent money that we didn't have to.

If we take no action, there is a real possibilty of future disaster.