Labor’s new goal for 2035 is for emissions to be 62% to 70% lower than in 2005. It’s less ambitious than the UK’s target but higher than in Japan, Canada and NZ • Follow our Australia news live blog for latest updates

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Climate experts have described the setting of Australia’s new climate target on Thursday as a historic “sliding doors moment” for the country and the most important decision by a government for a century.

But what is this all about? Let’s get back to some basics.

Graham Readfearn is Guardian Australia’s environment and climate correspondent

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