The significant anthropogenic impacts on the planet's atmosphere and climate are undeniable.  Palin's cheap shot at Bill Nye is a typical but pathetic display of self serving hubris and misinformation.  What academic and scientific credentials does Palin possess?  None whatsoever.  Note to ADN - please stop wasting ink by penning articles day after day highlighting the perpetual babble emitted from her mouth.  You're polluting.