And yet the deniers still claim that there is no scientific basis for the claim of human involvement.  I bet some of them will latch onto the El Nino contribution to "prove" that it's just the randomness of nature.  However, they will fail to understand that it's only a random amplification of the effects that we a directly responsible for by spewing so much CO2 in to the atmosphere. We won't get them to act until people are literally dying in the street.