Science starts with people being puzzled. This doesn't make sense, it doesn't fit with how I understand the world, what's going on here? Then it's a process of

Science starts with people being puzzled. This doesn't make sense, it doesn't fit with how I understand the world, what's going on here? Then it's a process of making hypotheses, figuring out how to test them, conducting the study, publishing it, and having the community critique your work. Over time a consensus emerges. The Tonga volcano erupted, what, four days ago? Scientists are looking at new data here. They're puzzled and just starting the process. Scientists have been looking at climate change for a long time now. Decades. Enough time for a consensus to emerge. Not enough to "know everything", but enough time to say yes, we know what causes it and what we need to do to deal with it.