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Corals as climate archive: Are El Ninos intensifying?

Corals as climate archive: Are El Ninos intensifying? — photograph supplied by Deutsche Welle

Image: Deutsche Welle

Records from the past few decades show that, during this period, El Nino events have been frequent and often extreme. But is this normal, or is it the result of climate change? Corals can give us a clear indication.

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