The Chaiten volcano had a major explosion today. A few weeks ago it seemed like it had been quieting down. Then the quakes started to increase in number. In the last few days they increased in intensity. The last couple of days the total number of quakes has been declining in number but the number of stronger quakes (4.0) has remained about the same.
At this time it still hasn't done anything that would lower worldwide temps (as far as anyone can tell,) but that is definitely back within the realm of possibility now. Today's quakes were strong enough to cause motion blur in the webcams, and visible rocking of the radio towers in their view.
For good blog coverage, visit
www.seablogger.com (look for Chaiten updates - he comments on just about every other topic on earth.)
www.volcanism.wordpress.com
www.eruptions.wordpress.com