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The Hawkesbury’s waters look beautifully natural but treated sewage makes up to 20% of the river flow where the North Richmond Filtration Plant draws its water. Karl Baron/flickr

More of us are drinking recycled sewage water than most people realise

Perth is looking at recycling all its sewage in the city’s future water supply. But many Australians’ drinking water already contains indirectly recycled treated sewage.
The proton battery, connected to a voltmeter. RMIT

How protons can power our future energy needs

A new rechargeable ‘proton battery’ - made chiefly from carbon and water - promises to outperform conventional lithium-ion batteries, while also being more environmentally friendly.
The world’s biggest burn of illegal ivory. Daniel Stiles

Ivory up in flames, but who really noticed? How messages on elephant poaching might be missed

The destruction of a massive haul of illegal ivory was supposed to send a message to poachers and those who trade in the tusks. Did they notice, or can the ivory be used to help elephant conservation?
Computer scientist and Computing Education Specialist Dr Nicky Ringland meets with Burwood Girls students. Nicky Ringland

Take it from us: here’s what we need in an ambassador for women in science

An ambassador needs to do more than just encourage young girls to enter STEMM, the role must address structural and cultural issues that push women out of the pipeline mid-career.
Australia’s Prime Minister and Minister for Jobs and Innovation meet with scientists at the Australian Institute of Marine Science. Michael Chambers/AAP

Servant or partner? The role of expertise and knowledge in democracy

Plato suggested we leave complex things to experts and Aristotle suggested we leave them to the people. That tension has carried through to modern debates about where expertise belongs.
Ruth and Maurie Crow with a plan of their linear city. Image courtesy of SEARCH Foundation

There’s more to the compact city than getting dense

Ruth and Maurie Crow were early advocates of the compact city. They also warned 50 years ago that a clear justice intent was needed to shape cities for their citizens rather than vested interests.