or tell them it actually comes out of a different hole
That's how you know it's going to be a lawyer.
(apologies to NewYorkCountryLawyer and cpt kangarooski)
Now, now. This is the first time the naysayers have had any concrete evidence about anything at all. Shooting them down immediately is unsporting, at least give them their 15 mins of fame before you point out how ridiculous this is.
[devils_advocate]
If the leaked emails and other data constitutes, as you say "concrete evidence", what is so ridiculous about drawing conclusions from it?
[/devils_advocate]
Seriously, though, regardless of whether the data and science of AGW is sound, some of the ethics of its supporters play right into the hands of their opposition. The truthers and other conspiracy theorists have long been saying that there is a conspiracy to promote AGW theory and stifle criticism and alternate climate theories. Now with the lost original data and leaked emails, this either (depending on your point of view) proves them right, or at least gives them a reason to believe so.
15 minutes of fame isn't going to make AGW doubters go away. Ignoring them won't make them go away. Encouraging open criticism is the only solution. It has prevailed in other scientific disagreements, there is no reason to suppose it won't in this case
"Security is mostly a superstition. It does not exist in nature... Life is either a daring adventure or nothing." -- Helen Keller