Why? Because some things are testable. Antibiotics can be tested in a lab, while climate science cannot. Furthermore the climate is not behaving like early mode

Why? Because some things are testable. Antibiotics can be tested in a lab, while climate science cannot. Furthermore the climate is not behaving like early models predicted it would, so it makes it hard for people to accept (especially after sensationalist movies like An Inconvenient Truth). Also the politics involved are complex. Some countries (like my Canada) use way more oil per person and wouldn't be as affected by climate change.