Significant investment in public transport is essential to ensure the Central City CBD can handle the predicted growth in commuting trips. Dean Lewins/AAP

Reimagining Sydney: this is what needs to be done to make a Central City CBD work

Central City 2048 proposes one new rail line, three metro lines and almost 300,000 extra jobs for the new CBD, one of three proposed for metropolitan Sydney. Clearly, the investment needed is massive.
Pluto’s ghoulish cousin, 2015 TG387, lurks in the distant reaches of our own Solar System. Illustration by Roberto Molar Candanosa and Scott Sheppard, courtesy of Carnegie Institution for Science.

A Goblin could guide us to a mystery planet thought to exist in the Solar system

Whether you call it Planet X or Planet Nine, talk of another planet lurking in our Solar system won't go away. So what does the discovery of a new object – nicknamed "The Goblin" – add to the debate?
Scientists working at the central peak of Gosses Bluff meteorite crater in Northern Territory. Nick Timms

How rare minerals form when meteorites slam into Earth

A meteorite hitting Earth at many kilometres per second puts 'ground zero' target rocks under immense pressure. A shock wave faster than the speed of sound can result – and new materials created.
With the Democrats favoured to win back the House of Representatives in the midterm elections, that makes impeachment of Trump more likely, right? Shawn Thew/EPA

Calculating the odds of a Trump impeachment: don’t bet the house on it

If the Democrats get close to retaking the House of Representatives in the midterm elections, the odds of impeachment are high. But the Senate remains problematic.
Detail from Witchetty Grub Dreaming, Jennifer Napaljarri Lewis, Warlukurlangu Artists of Yuendumu. Courtesy of the artist

The resonances between Indigenous art and images captured by microscopes

A new exhibition pairs paintings by Indigenous Australian artists with microscopic images captured by scientists. The parallels, as this gallery of pictures shows, are intriguing.

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