Not the most compelling title for a blog entry, but the recent extreme weather events that brought snow to both Florida and the Sahara desert are clearly explained in this 5 minute video. Produced by Yale Climate Connections, it denies the notion that when cold weather reaches further south than expected, this must be evidence that there is no global warming. The heating of the Arctic region and the reduction of sea ice disrupts the polar vortex of high pressure and alters the paths of the jet stream that results in cold air being dragged further south and warm air being dragged further north. Thus, while Florida freezes, Alaska has experienced abnormally high temperatures. Would that climate deniers in power who are rolling back attempts at amelioration of global warming could grasp the points made in this excellent and authoritative video! If they did, then perhaps a sustainable future might seem more desireable than the accumulation and concentration of wealth as a guiding principle of public and private leadership.