Young voters are forming a rallying cry for the federal government to address one of their greatest concerns: climate change.

The climate crisis has become so alarming to some Australians it's given rise to a little-known term called climate anxiety, also known as eco-anxiety.

Alexa Stuart, 21, has already spent years of her life anxious about the climate.

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The Newcastle environmentalist, who gate-crashed PM Anthony Albanese's campaign pitstop earlier this month to protest the federal government's climate policies, told 9news.com.au climate anxiety is a very real issue for many young Australians.

"I'd say from about 15 I've had climate anxiety," Stuart, a member of the climate advocacy group Rising Tide, explained.

"That's when things started to really sink in for me about the seriousness of the climate crisis, I remember like late nights trying to research the science of it and, and feeling quite emotional about it quite often."

Stuart recalls the devastating 2019/20 bushfires in Australia as a turning point for her passion – and horror – over the state of the environment.

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