Maybe this isn’t really a local enough topic for PDD, but given the earlier post on whether we’re vulnerable here to earthquakes, a Yahoo news story today seems interesting and relevant. The Chile quake apparently may have shifted earth’s axis, and made earth days slightly shorter. And this has happened before with big quakes, too.
Reminds me, too, of a Harper’s article from 2000 about dam building. There’s a quotation in that article that says: 
“The planet accommodates 40,000 large dams–dams more than four stories high–and some 800,000 small ones. They have shifted so much weight that geophysicists believe they have slightly altered the speed of the earth’s rotation, the tilt of its axis, and the shape of its gravitational field. Together they blot out a terrain bigger than California.”
So, any thoughts–think we’re headed towards shorter Perfect Duluth Days due to earthquakes and dam building?
