2. This gets back to the point Scott is making - now define "scientific evidence". For any reasonable definition of scientific evidence, there is a lot of evidence for almost everything. I can find scientific evidence for aliens if I want to - to a terribly low standard, true enough - although what Scott picked on was homeopathy which works a bit better.
People underestimate lies, damn lies and statistics. There are facts that back up any worldview, no matter how insane. Carl could find scientific evidence to back up his theory. There'll be anomalous weather station readings, weird sounds, academics papers published by crazy academics that kinda support him. We've all met monomaniacal people; they aren't shy of finding scientific evidence for their case. Still bunk though.