Sentence:  Klein diagnoses impressively what hasn't worked. No more claptrap about fracked gas as a bridge to renewables. Enough already of the international summit meetings that produce sirocco-quality <WSD>hot air</WSD>, and nonbinding agreements that bind us all to more emissions. 
Meaning of the word marked with <WSD> tags:  Empty, confused, or exaggerated talk lacking meaning or substance; bluster.