JEREMY Clarkson said Greta Thunberg should "shut up" and "go back to school" and that climate change must be tackled through science.
The Brit presenter described the 16-year-old climate change campaigner as "mad and dangerous" while speaking on an Australian morning show.
The 59-year-old was promoting the latest season of his motoring series Grand Tour when he spoke about the Swedish teen.
He said: "She's mad and she's dangerous and she's causing young children sleepless nights with her idiocy.
"No, I think she needs to go back to school and shut up."
Clarkson previously revealed how he had seen the effects of climate change while filming in Cambodia - but wanted the battle to be won through science.
He said: "I don't think I've ever actually seen the effects of global warming.
"When you see those houses on stilts on the show - 40 to 50 feet - and the water is miles away.
"And then you think, 'the water's supposed to be up there this time of year and it's down there'. It's unbelievable.
"So that's a remarkable thing and I know there'll be a load of kids saying, 'ha! You see. There you are!'
"That's fine. Now go to school. Learn science and do something about it."
Greta's school strike has inspired millions of students to take time off school to demand action on climate change.
FIERY SPEECH
It comes after the Sun columnist warned "every child in the western world is now absolutely terrified" over climate change since Greta started campaigning.
And he said her UN speech offered no solutions, earlier said: "I think she's a weird Swede with a bad temper."
Greta had blasted governments for thinking only of money as she said the world was sleepwalking into a climate catastrophe.
She raged: "People are suffering, people are dying, entire ecosystems are collapsing, we are in the beginning of a mass extinction and all you can talk about is money and the fairy tale of endless economic growth. How dare you!”
The teen’s fiery speech was hailed by millions, with climate change activists taking to the streets in huge protests around the world.
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But others were less impressed, including Donald Trump who sarcastically mocked her as a “very happy young girl looking forward to a bright and wonderful future”.
French President Emmanuel Macron also warned her “radical” climate change stance risks “depressing” an entire generation.