University of Washington oceanographers track 2,000 years of El Niño history, showing that it can shift in strength for centuries at a time.


University of Washington oceanographers track 2,000 years of El Niño history, showing that it can shift in strength for centuries at a time.

Piles of ancient shells provide the first reliable long-term record for the powerful driver of year-to-year climate changes. Results show that the El Niños 10,000 years ago were as strong and frequent as they are today.