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Issues such as how best to smooth the transition to renewable energy still need much more policy certainty. AAP Image/Lukas Coch

We can be a carbon-neutral nation by 2050, if we just get on with it

Australia’s current greenhouse emissions target is not ambitious enough, and we’re not on track to hit even this modest goal. But the potential is there to hit zero emissions by mid-century if we try.
A few days after baby molluscs come out from tiny eggs, they start building their shell layer after layer. Emily Nunnell/The Conversation NY-BD-CC

Curious Kids: how do shells get made?

Molluscs that have shells - like pipis, clams and oysters - have to build their own shell from scratch. And they keep building it their whole life, using chemicals from the sea and their own bodies.
The EU’s data protection measures aspire to force companies to be more transparent around data collection. from www.shutterstock.com

Should online users be bound by their privacy agreements?

The European Union has enacted a systematic plan to give people more control over their personal data online. But despite these efforts, privacy agreements remain largely unreadable.
A shade tree makes a big difference to the comfort of this couple. Nancie Lee/Shutterstock

How do we save ageing Australians from the heat? Greening our cities is a good start

Two trends in Australia, an ageing population and warming climate, are increasing the threat that heatwaves pose to our health. Increasing vegetation cover is one way every city can reduce the risk.
Newly-elected US Democrat Alexandria Ocasio-Cortez is co-author of the New Green Deal which proposes massively expanding the budget deficit as a way of supporting both the environment and the economy. Alba Vigaray/EPA

Vital Signs. Do deficits matter any more?

There are limits on how much governments can spend without earning, although increasingly politicians are behaving as if there are not.
Nora Heysen, Self-portrait 1934 oil on canvas 43.1 x 36.3 cm. National Portrait Gallery, Canberra Purchased 1999 © Lou Klepac

Friday essay: Nora Heysen, more than her father’s daughter

Nora Heysen was the first woman to be awarded the Archibald Prize, but for most of her life she was defined not by her art, but by her relationship to her famous father, the artist Hans Heysen.