Add to ORKGSite defines El Nino/Southern Oscillation and La Nina, provides a glossary, and presents real-time data of sea surface temperatures, winds and anomalies over time. Also describes research programs and sensing systems like sea level stations, ocean buoys and satellites. Extensive FAQs explain the phenomenon's frequency and impacts, describe measurement systems and forecasting. Links to: teacher resources, articles for kids, lesson plans from research institutions; plus animation and graphics of past El Nino events. Educational levels: Middle school, High school