There are more cows than people here in Nirranda South, three hours south-west of Melbourne, making it the perfect spot to test a technology that remains hugely controversial. I am at a facility run by Australia's Cooperative Research Centre for Greenhouse Gas Technologies (CO2CRC). If anyone can convince the public that carbon capture and storage can reliably reduce carbon dioxide emissions it's these guys. Even Friends of the Earth, Australia - which opposes the approach - has grudging respect for the research done here.

Carbon dioxide has pillaged the Great Barrier Reef of a compound that corals and many sea creatures need to grow. The finding, from the first survey of ocean acidification around one of the world's greatest natural landmarks, supports fears that the ecosystem is on its last legs.

Misleading and inaccurate claims published by an Australian anti-vaccination campaign group pose a risk to public health, a government watchdog has ruled. The Health Care Complaints Commission (HCCC), the health watchdog for the state of New South Wales, based in Sydney, issued the warning yesterday over information presented on the website of the Australian Vaccination Network (AVN).

Against all the odds, a number of islands in the middle of the Pacific Ocean are standing up to the effects of climate change.