Are we ready for a super El Niño?

Scientists say El Niño, the Pacific weather pattern that pushes up global temperatures, is underway, and could be one of the most intense on record,  causing floods, droughts and wreaking havoc on farmers' crops. We speak with New York Times columnist and best-selling author of The Uninhabitable Earth,  David Wallace-Wells, about what we can learn from past El Niños and what this one might bring.