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In the 1977 movie Star Wars, Princess Lea recorded a holographic message that was delivered to Obi Wan Kenobi. Screenshot from Star Wars/Lucasfilm/20th Century Fox

No more science fiction: 3D holographic images

Three-dimensional images you can see without special glasses have been created with a clever user of lasers and graphene.
Syriza leader Alexis Tsipras and Pablo Iglesias of Podemos have taken their populist parties to victory in Greece and a lead in the polls in Spain. Flickr/Fanis Xouryas

Populism and democracy: friend or foe? Rising stars deepen dilemma

The rise of left-wing populism challenges those who flatly denounced right-wing populism as undemocratic. Populism can appear as a democratic force in some contexts and anti-democratic in others.
Keytruda® targets a protein on the surface of immune cells that stopped them from attacking the melanoma cells. Australis Photography/Shutterstock

Explainer: how does Keytruda treat melanoma and why is it so costly?

Keytruda® is the latest drug to be registered in Australia for the treatment of widespread melanoma. But we must wait to see if it meets the cost-effectiveness targets for PBS subsidisation.
Australian Navy, Army and Air Force personnel marched in record numbers at the 2015 Mardi Gras, led by senior Defence officers – a stark contrast to the way gay veterans were treated in the past. Department of Defence

Laying wreaths for Australians who once served in silence

On Anzac Day 1982, five gay veterans tried to lay a wreath at Melbourne’s Shrine of Remembrance, but were turned away by the Shrine Guard and the state RSL president. This year, that won’t happen.
Leadbeater’s Possum is dependent on large, old trees that produce hollows for its survival. David Lindemayer

Victoria must stop clearfelling to save Leadbeater’s Possum

The Leadbeater’s has been formally listed as critically endangered. But unless clearfelling in the possums’ stronghold stops, it will continue down the road of extinction.
What is obscured in our understanding of returned servicemen’s problems is the private pain of families who bear the brunt of these psychological strains. AAP/Dan Himbrechts

Marked men: anxiety, alienation and the aftermath of war

Australia has continually faced a returned soldier crisis. This is something that marked men returning from all the wars of modern memory – from the Great War to Afghanistan and Iraq.
Lest we forget is an expression with dignified origins, a rich history and a budding linguistic fossil. E-Maxx

Lest we forget lest: Anzac and the language of remembrance

This Anzac Day the words “lest we forget” will often be spoken. It’s a usage that we don’t otherwise hear. Why do linguistic fossils such as “lest we forget” linger – and how do they help us remember the fallen?
Rising imprisonment rates are the result of political responses to media and public agitation for tougher sentences. AAP/David Crosling

The evidence is in: you can’t link imprisonment to crime rates

Some claim rising crime rates justify jailing more people, others that such policies cut crime. Evidence from around the world shows those claims are wrong and that we should be looking at inequality.
At one climate change conference after another, leaders of the developed democracies solemnly pledge action, then return to the gridlock of political systems with 19th-century origins. EPA/COP20

Hidden crisis of liberal democracy creates climate change paralysis

Even as the challenges of climate change grow ever more obvious, what remains largely unacknowledged is the crisis in liberal democratic politics that is preventing an effective response.
The People’s Bank of China surprised observers by cutting its reserve requirement ratio by 100 basis points to 18.5% on the weekend. EPA/MARK

China’s required reserve ratio cut will nudge Australia along

Most of the new credit released after China’s central bank cut the required reserve ratio will be used to fund new investment in infrastructure and construction – and that’s good news for Australia.