What exactly do you think?
1. That global warming is not happening to any appreciable degree.
2. That global warming is happening, but is mostly if not entirely a natural process.
3. That global warming is happening and has significant inputs by human activity, but there is nothing that can be done to change things.
4. That global warming is happening and has significant inputs by human activity, but we just don't know enough about it to take any action to try to mitigate it.
5. That global warming is happening and has significant inputs by human activity, and that any plans to act to mitigate it are driven by special interest groups.
6. ? (two lines or less)