'Blah, blah, blah...': Watch Greta Thunberg roast world leaders on climate change

Swedish activist Greta Thunberg mocked world leaders at a youth climate summit in Milan on Tuesday. The teen climate activist said that the last 30 years of climate action had amounted to "blah, blah, blah."

Thunberg imitated the leaders by repeating their commonly used expressions on the climate crisis, dubbing them as empty words and unfulfilled promises.

"When I say climate change, what do you think of? I think jobs. Green jobs. Green jobs," she said, referencing Biden's speeches on the climate crisis.

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"We must find a smooth transition towards a low carbon economy. There is no Planet B," she said, in a reference to a speech given by French President Emmanuel Macron. "There is no Planet Blah. Blah, blah, blah, blah, blah, blah."

"This is not about some expensive, politically correct dream at the bunny hugging or blah, blah, blah. Build back better, blah, blah, blah. Green economy, blah, blah, blah," Thunberg said.

"Net zero, blah, blah, blah. Climate neutral, blah, blah, blah. This is all we hear from our so-called leaders -- words, words that sound great but so far, has led to no action or hopes and dreams. Empty words and promises."