El Nino 750 already 750 years ago?

[claire]

What tree's study can bring

http://earthobservatory.nasa.gov/Newsroom/NasaNews/2002/2002120910972.html

[ditch]

Newly discovered perhaps but this is the first estimate I've seen of how long El Nino has been around. It certainly has a major effect on the weather in Oz with droughts and floods resulting because of its influence.

Interesting story.