Whenever the alarmists open their mouths, demand that they describe under what conditions Man Made Global Warming is *not* happening.
And do not let them get away with circular arguments, like “MMGW isn’t happening when it isn’t happening”, or “MMGW isn’t happening when there is global cooling.”
The reason that a “negative case” for MMGW must be demanded of them is because they are saying, in effect, that *everything* proves MMGW. Hot, cold, storm, clouds, El Nino, La Nina, melting icecaps, freezing icecaps, teen girls wearing revealing clothing and too much makeup, you name it.
I’m hoping the “warmists” don’t settle on “teen girls wearing revealing clothing” as a cause for AGW. Anything but that. ;-)