When planning for the future, certainty can be hard to come by. That’s certainly the case when it comes to climate change. Yet scientists still urge confidence in their models. Why?

Modern life is made up of predictions and models of what we think that future looks like. We expect the economy to grow at 2 or 3 percent a year in real dollars over time and inflation to exist at a similar rate. Models aren't perfect but what is the alternative? If we have no trust in the models we can't plan for the future.