Empirical evidence. We've just been told that the recent record blizzards are not proof that global warming isn't real; on the contrary, we're now told that this record cold weather is PROOF of global warming. Really? Climate revisionism at its best.
Here, liberal American politicians (in the recent past) proclaimed LACK OF SNOW as proof of manmade global warming. So, which is it? It's ridiculous that contrary empirical evidence (i.e., lack of snow and too much snow) is used to validate global warming; it's fairly easy to see the frantic 'grasping at straws' that's now happening, due to recent cold weather and scandals. You can't have it both ways (though you're now trying), liberals.
My 9-year-old daughter is smart enough to see the hypocrisy and BS level of this obvious contradiction.