Australia has been left behind by most other wealthy nations in failing to disclose its post-2020 carbon reduction goals by the first quarter of 2015 as agreed at a global gathering in Peru last December.
The 28-nation European Union has announced that it would cut greenhouse gas emissions by at least 40 per cent on 1990 levels by 2030.
On Tuesday, US President Barack Obama formalised in a submission to the UN the United States’ commitment to cuts that were first revealed in a landmark announcement with China last year.
China and the US are the world’s two largest greenhouse gas emitters.
Mr Obama has pledged that the US will cut its emissions by 26 to 28 per cent on 2005 levels by 2025.
Mexico, Norway and Switzerland have also declared their plans to reduce emissions after 2020 when the current global treaty, the Kyoto Protocol, expires.
The UN wants…