A Powerful El Niño Is Forming. If History Is a Guide, It Could Hit Hard.

A Powerful El Niño Is Forming. If History Is a Guide, It Could Hit Hard.: The biggest episodes of the past have altered the course of human events, according to researchers. An emerging one is drawing historic comparisons. By Chico Harlan Well before it was understood, the El Niño phenomenon was leaving its marks on humanity.El Niño is the name given to powerful shifts in Pacific Ocean winds and