Doc at The Autopsy has put together an interesting video that puts the global warming "hockey stick" into perspective. The "hockey stick" is the name given to the way a graph of temperatures over the past century or so stays fairly constant and then suddenly shoots upward like a hockey stick lying on the ground with its blade pointing up. What the video does is start with a graph that shows recent temperature changes and then keeps putting those changes into greater and greater historical context. The longer the reach of the data the less significant the hockey stick appears:
If this is accurate it makes all of the "sky-is-falling" panic about global warming seem rather melodramatic and overblown.
RLC