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Comet 46P/Wirtanen captured on November 15 this year using the remote iTelescope (Siding Springs Observatory, Australia). Flickr/Victor R Ruiz

We have a Christmas comet: how to spot 2018’s interplanetary bauble

The comet 46P/Wirtanen is just 1.2km in size but it should be visible in the night sky this Saturday as it makes a close approach to Earth this year. And don’t forget the Geminids meteor shower.
Scott Morrison has promised to protect people against discrimination because of their religious faith, and says he wants to do it before the election. Shutterstock

Morrison wants Religious Discrimination Act passed before election

Prime Minister Scott Morrison plans to create a new post of Freedom of Religion Commissioner, because he says many people of religion “feel the wheels closing in”.
Economists have searched for the mythical balance between the cost of climate action, and the future cost of doing nothing. Joop Hoek/Shutterstock.com

We can’t know the future cost of climate change. Let’s focus on the cost of avoiding it instead

For decades, economists have pondered the ‘social cost of carbon’ - the price worth paying to avoid the future costs of greenhouse emissions. But a new analysis suggests this quest is impossibly complex.
Genetic information is relevant not only for an individual, but also their blood relatives, because it’s often hereditary. Joshua Reddekopp/Unsplash

Can (and should) a doctor tell my biological relative my genetic results without my consent?

Because genetic changes that cause cause health complications can be hereditary, the information affects not only the person with the mutation but also their biological relatives.
Newstart should be lifted by mush more than usually proposed, a new ANU algorithm finds. Shutterstock

Cut the pension, boost Newstart. What our algorithm says is the best way to get value for our welfare dollars

A new ANU computer algorithm can provide near instant answers about how to get the best bang for welfare dollars. It says we should boost Newstart and cut either pensions or family benefits.
Uluru-Kata Tjuta: of 19 Australian World Heritage sites this is one of only two that recognise the values of ‘living’ Aboriginal culture. Shutterstock

Australia’s problem with Aboriginal World Heritage

Of 19 World Heritage sites across the country, only two, Kakadu and Uluru-Kata Tjuta, recognise the values of “living” Aboriginal culture. None of Australia’s three sites inscribed purely for cultural values recognises Aboriginal people.
Albanese predicts next week’s ALP national conference will be “very. constructive”, dismissing concerns about divisions over boat turnbacks. Mick Tsikas/AAP

Politics with Michelle Grattan: Anthony Albanese on Labor’s road ahead

Anthony Albanese on Labor’s road ahead CC BY67.5 MB (download)
Speaking to The Conversation, Albanese wouldn't comment on Bill Shorten's unpopularity with voters, arguing instead that it's a matter of whether the Labor team is “seen as worthy of election".
Your salt intake from water can vary depending on where you live. Bryan Carlson/Unsplash

Your drinking water could be saltier than you think (even if you live in a capital)

Of Australia’s capital cities, Perth has the saltiest tap water, while Melbourne, Hobart, Darwin and Canberra have the least salty. And while all are within guidelines, the variation is striking.
It’s a long way from most places, but it is about to host a bigger battery than the world’s biggest, molten salt solar and pumped hydro generation, and a much bigger steelworks. Shutterstock

Looking good. Why Whyalla, of all places, has a sustainable future

Far from being wiped off the map as was once predicted, Whyalla is coming back in an unlikely way, as potentially Australia’s biggest steel producer powered almost entirely by renewable energy.