EL NIÑO'S POWERFUL REACH   What is
El Niņo?
Clues From
the Past
Long Distance
Connections
Winners &
Losers
El Niņo
Lowdown

Periodically, the western Pacific Ocean warms. Weather changes around the world. It's an El Niņo. Discover its early warning signs, its ancient past, its global connections, and its good - as well as its bad - consequences.

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What is El Nino What is El Niņo?

El Niņo events occur in the Pacific Ocean but can disrupt weather patterns worldwide. Discover the causes and characteristics of El Niņo events.
Clues From the Past Clues From the Past

El Niņo may seem new to many of us. But scientists have evidence that suggests El Niņo events have happened for at least 40,000 years. Discover the clues that can reveal El Niņos of the past.
Long Distance Connections Long Distance Connections

El Niņo and La Niņa impact weather in different parts of the world and at different times. Discover these global impacts.
Winners & Losers

During an El Niņo, sea temperatures climb, triggering torrential rains in typically dry climates. What becomes a disaster for some animals proves a bonanza for others.
The Lowdown on El Nino The Lowdown on El Niņo

How well do you know El Niņo? Study a recent satellite image to see if an El Niņo is coming. Learn little-known facts about El Niņo's world-wide impacts.