We have successfully used a new technique – involving light from an exploding star that arrived at Earth via multiple winding routes through the expanding Universe – to measure how fast the Universe is expanding.

On Star Wars Day we take a look at some of the things that keep us coming back to one of the most famous science fiction epics of all time.

The state and federal governments' Murray-Darling Basin Plan was intended to preserve environmental flows while allocating set volumes of water to farmers. But it’s not working properly.

New research, published today in the journal Nature, projects a slowing of the Antarctic overturning circulation and deep ocean warming over the next few decades. This could change our climate and marine environment in profound and potentially irreversible ways.

A new report card on Australia’s environment reveals 2022 was a bumper year for our rivers and vegetation – but it wasn’t enough to reverse the long-term decline in plant and animal species.

The world is in deep trouble on climate change, but if we really put our shoulder to the wheel we can turn things around. Loosely, that’s the essence of today’s report by the Intergovernmental Panel on Climate Change (IPCC).

Captive breeding of threatened species for release into the wild is an important conservation tool. But where threats to wild populations remain unresolved, this tool may not guarantee population recovery in the long term.

As we accelerate plans to protect more Australian habitat, we must watch for problems. Land with high conservation value must be prioritised for protection.

Queensland will become the second Australian jurisdiction to offer pill testing. This is likely to reduce the risk of people overdosing on both unexpected and high potency substances, as well as reducing illness and death from harmful additives and mixtures.