Colin PackhamSonali Paul 4 minute read Australian Prime Minister Scott Morrison stopped short of endorsing a 2050 target for net zero greenhouse gas emissions ahead of U.S. President Joe Biden's climate summit this week. In a speech on Monday, he said only that Australia, the highest per capita carbon emitter among the world's richest nations, will achieve net zero "as quickly as possible and preferably by 2050". "We don't make commitments lightly in this country. We prepare our plan to achieve them and then we follow through," Morrison said at a major business event in Sydney. Analysts took those comments as a sign Australia would not commit to ambitious carbon emissions reduction targets at the virtual summit on April 22-23, defying pressure from the United States.