> human emissions are now 25 percent greater than in the last big El Niño in 1997/98 Sigh. It's not as if we were clueless about the effects of emissions 20 ye

> human emissions are now 25 percent greater than in the last big El Niño in 1997/98 Sigh. It's not as if we were clueless about the effects of emissions 20 years ago, already