Daily saliva testing for COVID-19 has begun across South Australia's quarantine hotels as the state government continues to boost security around people returning from overseas.
President Joe Biden says it will be difficult for the United States to reach herd immunity, at least 75 per cent of the population inoculated against coronavirus, before the end of August.
The man who will give the final tick of approval to COVID-19 vaccines in Australia says transparency during the rollout is critical, while the federal government has announced certificates will be provided to those having the jab.
Australia may follow New Zealand in excluding the agriculture sector in its efforts to achieve a net zero emissions target by 2050.
An e-bike sales spike has been attributed to pent-up demand from Australians coming out of lockdown, as purchases nearly doubled since the COVID-19 pandemic hit.
LATEST COVID-19 DEVELOPMENTS:* Australia has marked another day with no locally-acquired cases of COVID-19 as more stranded Aussies prepare to return home when international arrival caps return to higher levels.
One police officer has been run over by a reversing car while another has been shot in the arm in an incident in Sydney's inner west.
A man has been shot in the stomach on the NSW Central Coast, with the perpetrator still on the run.
Tyler Wright, Sally Fitzgibbons and Stephanie Gilmore will pit their skills against the best in the world when Newcastle hosts the opening round of the World Surf League from April 1-11.
Victoria will review airflow within quarantine hotels and change mask policies for staff as it seeks to avoid a repeat of two suspected COVID-19 leaks.