Given current events on the US west coast (where I live) I've been quite curious about seeing the global trends quantified as well. I'm most curious to know abo

Given current events on the US west coast (where I live) I've been quite curious about seeing the global trends quantified as well. I'm most curious to know about changes in variance over time, but collecting (let alone analyzing) a global dataset that goes back far enough would be a bit of a task.