Rising oceans to threaten 1.5 million Australians by 2050: report

Workers operating heavy machinery to stabilise Wamberal Beach as a low-pressure cyclone lashes the Central Coast, forcing residents to evacuate beachfront homes amid growing erosion fears, on July 2, 2025. [AFP] Rising oceans and flooding caused by climate change will threaten the homes and livelihoods of more than a million Australians by 2050, while deaths from heat-related illness will soar, a landmark report warned Monday ahead of Canberra's release of emission reduction targets this week. The long-awaited national climate risk assessment found that rising temperatures will have "cascading, compounding, concurrent" impacts on life in Australia, home to more than 27 million people. "We are living climate change now. It's no longer a forecast, a projection or prediction -- it is a live reality, and it's too late to avoid any impacts," Climate Minister Chris Bowen said. The report, prepared independently for the government, found that 1.5 million people living in coastal areas will be at risk of sea level rise and coastal flooding by 2050. By 2090, about three million people will be at risk from rising oceans. Sea level rises pose a significant threat to homes, livelihoods, and cultural connections -- particularly in locations such as the Torres Strait Islands, the report said. Scattered through the warm waters off Australia's northernmost tip, the sparsely populated islands are threatened by seas rising much faster than the global average. Joanne Hill, community engagement coordinator at Edith Cowan University and an Indigenous woman, said in response to the report "we cannot delay this emergency response anymore". "Our coastal and island communities, particularly the Torres Strait Islands, are at immediate risk of losing their homes, their cultural practices and traditions if we do not do anything now," Hill said. Monday's report comes as Australia is set to release its next round of emissions reduction targets in the coming week, a key obligation under the landmark Paris climate agreement. Many hope the country will reveal more ambitious targets. Losses in Australian property values are estimated to soar to Aus$611 billion (US$406 billion) by 2050 and could increase to Aus$770 billion by 2090. Should the temperatures increase by 3C, heat-related deaths could soar by more than 400 percent in Sydney, Australia's most-populated city, the report said. Australia's unique species will also be forced to move, adapt to the new conditions or die out as climate change intensifies, the report said. Amanda McKenzie, chief executive of the Climate Council NGO, described the report as "terrifying". "We can choose a better future by cutting climate pollution harder and faster now," McKenzie said. "The first step is legislating the strongest possible 2035 climate target and stopping new polluting projects," she said. One of the world's biggest fossil fuel exporters, Australia has been criticised for treating climate action as a political and economic liability. The "climate wars" -- a years-long domestic fight over emissions policy -- were blamed for curtailing progress in cutting heat-trapping carbon emissions. The centre-left Labor government has stepped up efforts in recent years to bring down emissions and roll out renewable energy. However, despite its green ambitions, the government continues to approve fossil fuel projects, including granting a 40-year extension to a major liquefied natural gas plant. The extended lifeline of the North West Shelf project -- a sprawling complex of offshore rigs and processing factories pumping out more than 10 million tonnes of LNG and petroleum each year -- has angered Indigenous and environmental groups. Bowen said moving to a greener future presented a "complicated and complex" set of challenges and that gas would remain a necessary backup renewable in the future energy mix. "But we also face that challenge from a position of strength, because we have the best renewable resources in the world," he said.

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